In the era of digitization, Cloud Computing platforms are being used by various businesses/firms around the globe. AWS (Amazon Web Services) is a popular Cloud Computing platform and is widely used in India. AWS has the largest market share in the global Cloud Computing market, i.e., around 32.4%. There is a need for expert Cloud Computing professionals in India to fill the talent gap and help in pacing fast with the technology revolution. IT professionals who are fluent in using AWS are in high demand by the firms. If you are preparing for AWS interview questions, read this blog to know some of the popular questions and answers.
We can categorize AWS interview questions into several types depending upon the job role one is applying for. Some of the common types of AWS interview questions asked based on various job roles are AWS scenario-based interview questions, Amazon interview questions for freshers, Amazon technical interview questions, AWS cloud interview questions, etc. Below are some of the trending AWS interview questions.
AWS provides Cloud Computing solutions and APIs to firms and individuals around the globe. Besides cloud services, AWS also offers other facilities for organizations/individuals like computation power, database services, content delivery, etc. Organizations have to pay for the AWS services used on a metered basis.
An organization can build a distributed computing environment with the help of AWS tools and services. Launched in 2002 (web services) and 2006 (Cloud Computing), AWS is widely used in India by many organizations, businesses, and individuals. Some government organizations in India also use it.
There are many Cloud Computing platforms in the market. But AWS’s flexibility and cost-effective cloud computing solutions set it apart from the other platforms. Currently, there are more than 200 services and products offered by AWS in various fields like IoT (Internet of Things), mobile development, data analytics, networking, etc.
Many of their services are not directly accessible to the end-users as AWS offers developer APIs for it. The web services provided by AWS are also widely used over HTTP for business purposes.
EC2 is part of the AWS services and enables users to rent virtual computers and run their programs. One can deploy applications on a large scale with the help of EC2. EC2 helps users to boot an AMI (Amazon Machine Language) to access a virtual machine. Amazon’s configuration of a virtual machine via AMI is called an ‘instance’. You can launch, create, and stop many server instances with the help of EC2 for your business/organization. You will have to pay per second for the number of active servers while using EC2 for your business/firm.
Besides offering various virtual operating systems, EC2 also provides persistent storage and elastic IP addresses. Amazon CloudWatch is another service widely used by EC2 customers as it helps them monitor resource utilization. You can monitor the usage of CPU, network, etc., of RDS database replicas using Amazon CloudWatch. The auto-scaling feature of EC2 helps in adapting according to the traffic. For example, if someone uses EC2 for their e-commerce site, it will automatically scale up if the traffic on the site increases.
This is one of the important AWS interview questions for experienced posts. Read on to know more AWS interview questions and answers for experienced/senior posts.
There are four types of pricing models for Amazon EC2 instances that are as follows:
S3 (Simple Storage Service) provides scalable object storage space to firms and IT professionals. It is one of the earliest services introduced by AWS. The easy-to-use web services interface of S3 allows users to store and retrieve data from remote locations. S3 contains buckets to store files/data.
Users create a bucket in the S3 and name it as if it is a universal namespace. An HTTP 200 code is received on successful uploading of a file to the assigned S3 bucket. A unique name is given to each bucket to generate the DNS address (unique).
You can also download the data from a bucket in S3 and permit other users to download it. The authentication mechanism of S3 helps in securing the data from any possible breaches.
To the public cloud. However, they want some of their information/data to be accessed only by the management team. The rest of the resources will be shared among the employees of the firm. You must suggest a suitable cloud architecture for your firm and the reason of choice.
This question is one of the critical AWS interview questions. Scenario-based AWS interview questions highlight the candidate’s experimental knowledge and industry approach.
I will suggest hybrid cloud architecture for my organization. Hybrid cloud architecture has the perfect blend of private and public clouds. One can use the public cloud in the hybrid architecture for the shared resources in my firm. The confidential resources can only be shared with the management team using a private cloud.
We can enjoy the services of both private and public clouds by installing a hybrid cloud architecture in our firm. Depending on the data security requirements, a hybrid cloud allows data to be accessed at different levels in an organization/firm. It will help our firm in cutting costs in the long run.
There are three types of cloud services models that are:
RTO (Recovery Time Objective) refers to the maximum waiting time for AWS services/operations resumption during an outage/disaster. Due to unexpected failure, firms have to wait for the recovery process, and the maximum waiting time for an organization is defined as the RTO. When an organization starts using AWS, they have to set its RTO, which can also be called a metric. It defines the time firms can wait during disaster recovery of applications and business processes on AWS. Organizations calculate their RTO as part of their BIA (Business Impact Analysis).
Like RTO, RPO (Recovery Point Objective) is also a business metric calculated by a business as part of its BIA. RPO defines the amount of data a firm can afford to lose during an outage or disaster. It is measured in a particular time frame within the recovery period. RPO also defines the frequency of data backup in a firm/organization. For example, if a firm uses AWS services and its RPO is 3 hours, then it implies that all its data/disk volumes will be backed up every three hours.
The auto-scaling feature in AWS EC2 automatically scales up the computing capacity according to the need. It helps in maintaining a steady performance of business processes. Auto Scaling can help scale multiple AWS resources within a few minutes. Besides EC2, one can also choose to automatically scale other AWS resources and tools as and when needed. The benefits of the EC2 auto-scaling feature are as follows:
S3 storage classes are used for data integrity and assisting concurrent data loss. Whatever object you store in S3 will be associated with a respective storage class. It also maintains the object lifecycle, which helps in automatic migration and thus saves cost. The four types of S3 storage classes are as follows:
That helps users render images and perform general computation tasks. Your firm’s management team has suggested using an application load balancer for routing the incoming traffic on the hosted application. Explain how an application load balancer is a good choice for routing incoming traffic.
This question is an example of scenario-based AWS interview questions. Besides having theoretical knowledge, a candidate should also know about the industry uses and working of various AWS services.
The user’s requests regarding image rendering can only be directed to the image rendering servers, while the general computing users can be directed to the computing servers. This will help balance the load on various servers and access them when needed.
A policy is an object in AWS that is associated with a respective resource and defines whether the user request is to be granted or not. The six different types of policies in AWS are as follows:
Amazon VPC (Virtual Private Cloud) lets a user launch AWS resources into a virtual network defined by the user only. Since the user defines the virtual network, various aspects of the virtual network can be controlled by the user, like subnet creation, IP address, etc.
Firms can install a virtual network within their organization and use all the AWS benefits for that network. Users can also create a routing table for their virtual network using VPC. A routing table is a set of rules that defines the direction of the incoming traffic.
The communication between your virtual network and the internet can also be established using the internet gateway offered by AWS VPC. One can access the VPC offered by Amazon via various interfaces that are AWS management console, AWS CLI (Command Line Interface), AWS SDKs, and Query API. Users can pay for additional VPC components if required like NAT gateway, traffic mirroring, private link, etc.
Since your website performs a large number of reading/writing operations per minute, you have also used a Multi-AZ RDS DB instance (extra-large). It was going smoothly as per your plans until you discovered read contention on RDS MySQL. How are you going to solve this issue to enhance the performance of your website?
This question is one of the prominent technical AWS interview questions asked. Besides knowing about the cloud deployment services of AWS, candidates should also focus on the database services offered by Amazon.
I will install/deploy ElastiCache in the various availability zones of EC2 instances. Deploying ElastiCache in the memory cache of different availability zones will create a cached version of my website in various zones. RDS MySQL read replica will then be added to each availability zone for faster performance of the website. Since the ‘RDS MySQL read replica’ is added to each availability zone, it will not further load on the RDS MySQL instance, thus solving the read contention issue. Users can also access my website quickly in various availability zones as a cached version is created in each zone.
For faster accessibility and performance. What course of action will you suggest for the stated scenario?
AWS data engineer interview questions can be asked if a candidate is applying for data scientist/engineer. The data center of my firm can be connected to the Amazon cloud environment with the help of VPC (Virtual Private Cloud). I suggest my firm establish a virtual private network and connect VPC and the data center. My firm can then launch AWS resources in the virtual private network using VPC. A virtual private network will establish a secure connection between the firm’s data center and the AWS global network. Adding cloud services to our organization will help us do more work in less time while successfully slashing costs in the long run.
I would also suggest creating multiple backups of the company data before moving it successfully to the cloud. AWS offers affordable backup plans, and one can also automate backups after a fixed interval.
Elastic load balancing in AWS supports three different types of load balancers. The load balancers are used to route the incoming traffic in AWS. The three types of load balancers in AWS are as follows:
NAT (Network Address Translation) is an AWS service that helps in connecting an EC2 instance to the internet. The EC2 instance used via NAT should be in a private subnet. The internet and NAT can also help connect an EC2 instance to other AWS services.
Since we are using the EC2 instance in a private subnet, connecting to the internet via any other means would make it public. NAT helps in retaining the private subnet while establishing a connection between the EC2 instance and the internet. Users can create NAT gateways or NAT instances for establishing a connection between EC2 instances and internet/AWS services.
NAT instances are single EC2 instances, while NAT gateways can be used across various availability zones. If you are creating a NAT instance, it will support a fixed amount of traffic decided by the instance’s size.
Various types of AWS RDS database types are as follows:
Redshift is a data warehouse service offered by Amazon that is deployed in the cloud. It is fast and highly scalable as compared to other data warehouses in the cloud. On average, Redshift provides around ten times more performance & speed than different data warehouses in the cloud. It uses new-age technologies like machine learning, columnar storage, etc., that justify its high stability and performance. You can scale up to petabytes and terabytes using AWS Redshift.
Redshift uses OLAP as its analytics processing system and comprises two nodes for storing data/information. Its advanced compression and parallel processing offer high speed during AWS operations in the cloud. One can easily add new nodes in the warehouse using AWS Redshift. Developers can answer a query faster and can also solve complex problems using Redshift.
AMI (Amazon Machine Image) is used to create a virtual machine within the EC2 environment. The services that are delivered via EC2 are deployed with the help of AMI only. The main part of AMI is its read-only filesystem image that also comprises an operating system. AMI also consists of launch permission that decides which AWS account is permitted to launch instances using AMI. The volumes are attached to an instance, while the launching process is decided by block device mapping in AMI. The AMI consists of three different types of images.
A Public image is an AMI that any user/client can use, while users can also opt for a ‘Paid’ AMI. You can also use a ‘Shared’ AMI that provides more flexibility to the developer. Users can access A shared AMI, which is allowed as per the developer’s orders.
This question is among the AWS basic interview questions asked to a candidate. It is also one of the important AWS interview questions for freshers. Read on to know the answer to this AWS interview question.
When RDS/EC2 servers alter the instance size for scaling purposes, it is called vertical scaling. A larger instance size is picked for scaling up in vertical scaling, while a smaller instance size is picked for scaling down. The size of the instance is altered on-demand via vertical scaling in AWS.
Unlike vertical scaling, an instance’s size is altered per the requirements of horizontal scaling. A system’s number of nodes/instances is changed without altering their size via horizontal scaling. The horizontal auto-scaling is based on the number of connections between an instance and the integrated ELB (Elastic Load Balancer).
Both AWS and OpenStack are indulged in providing cloud computing services to their users. AWS is owned and distributed by Amazon, whereas OpenStack is an open-source cloud computing platform. AWS offers various cloud computing services and IaaS, PaaS, etc., whereas OpenStack is an IaaS cloud computing platform. You can use OpenStack for free as it is open source, but you have to pay for AWS services as you use it.
Another significant difference between AWS and OpenStack is in terms of performing repeatable operations. While AWS performs repeatable functions via templates, OpenStack does it via text files. OpenStack is good for understanding and learning cloud computing, but AWS is better and equipped for businesses. AWS also offers business development tools that OpenStack does not offer.
People using an AWS account can audit it using the AWS CloudTrail. It also helps in ensuring compliance and governance of the AWS account. As soon as an AWS account is activated, CloudTrail also starts working and records every AWS activity as an event. One can visit the CloudTrail console anytime and can view recent events/actions. All the efforts by a user or a role are recorded in the CloudTrail. The actions taken by various AWS services are also recorded in CloudTrail.
With CloudTrail, you will have enhanced visibility of your AWS account and the associated actions. In an AWS infrastructure in any organization, you can quickly get to know any particular activity and gain control over the AWS infrastructure.
AWS Lambda is a computing platform provided as a part of the AWS services that do not need servers to perform activities. Any code compiled on AWS Lambda will run in response to events, and it identifies the resources required for code compilation automatically. AWS Lambda supports various coding languages like Node.js, Python, Java, Ruby, etc. With AWS Lambda, you will pay only for the time your code is being executed. You will not be charged any amount when you are not using any computer time.
Besides running your code in response to events, you can also run your code in response to HTTP requests via AWS Lambda. AWS Lambda will automatically manage various resources like memory, network, CPU, etc., while you run a code on it.
You are a senior developer in your company and have been asked to analyze your firm’s amount for AWS services. How will you analyze the cost spent on AWS services to ensure that you are not paying more than you use?
Cost management can be an important topic of discussion in AWS interview questions. Also, this question is an example of AWS scenario-based interview questions.
I will refer to the ‘Top Services Table,’ which is visible in the cost management console of AWS. It will let me know about the top five services being used by our firm and how much money we are spending on those services. I will also take the aid of cost explorer services offered by AWS that will let me analyze the last 13 months’ usage and associated costs.
One can use the cost allocation tags to identify the AWS resource that has cost more than other services in any particular month.
A file that has a size of more than 100 megabytes can be uploaded in Amazon S3 using the multipart upload utility offered by AWS. Multipart upload utility will allow me to upload the 120 megabytes file into multiple parts. All the parts of the large file will be uploaded individually using the multipart upload utility. Once all the original files are uploaded, one can merge to get the original file with 120 megabytes.
Using a multipart upload utility will help me in decreasing the upload time significantly. AWS S3 commands can be used for multipart uploading and downloading. AWS S3 commands are also capable of automatically performing multipart uploading/downloading after evaluating the file size.
The management decides that they want to inculcate email functionality in their application. How will you approach this scenario as part of your firm’s management team?
Amazon offers various services for a diverse range of use cases that work well with AWS-based applications. You should know about other Amazon services that go well with AWS, as AWS interview questions can be based on them.
I recommend using the Amazon SES (Simple Email Service) to integrate email functionality with our AWS-based application. SES can help us set up various types of mail forwarding services like mass mailing, transactional mailing, marketing mailing, etc. SES is a cost-effective solution for integrating email functionality within multiple applications. The scalable SES service is highly secure and can help my firm send emails globally.
For safeguarding the applications running on AWS from any kind of DDoS (Distributed Denial of Service) attacks, we can use AWS Shield. AWS Shield can automatically identify a DDoS attack and will reduce application downtime and latency. A firm doesn’t have to contact Amazon tech support as all the protective measures can be automated via AWS Shield. All AWS users are subjected to automatic protection against DDoS attacks via AWS Shield Standard. However, for protection against large/organized DDoS attacks, one can use the AWS Shield Advanced services.
AWS Shield Advanced protects AWS-based applications against various sophisticated DDoS attacks on the network and transport layer. It also provides real-time visibility and monitoring at the time of any DDoS attack on the AWS applications.
Amazon CloudWatch helps monitor the AWS services and resources being used in real-time. CloudWatch uses various metrics that help understand the AWS resources and services being used. Via CloudWatch can also view the metrics related to customized AWS applications as the CloudWatch dashboard is also customizable. By default, CloudWatch displays various metrics associated with AWS services being used. One can customize and choose a set of metrics to be shown by CloudWatch.
One can access CloudWatch services via various means like CloudWatch console, AWS CLI, CloudWatch API, and AWS SDKs. Besides resource utilization, we can also monitor the operational health of AWS services via CloudWatch.
There are three types of virtualization in AWS that are as follows:
This question is an example of AWS interview questions for freshers. Scenario-based AWS interview questions define the industry-oriented approach of the candidates.
The AWS data that needs to be encrypted should be in the same region where one creates the key. In the given scenario, the data is encrypted in the USA region. But the key was created in the Asia region. It doesn’t matter if you link an external AWS account in another region while the data encryption is to be done in another region.
Cross-region replication is used when one needs to copy data from one bucket to another. The main benefit of cross-region replication is that it allows you to replicate data from one bucket to another while both buckets are in different regions. One can do Asynchronous copying of data across buckets in the same AWS management console via cross-region replication.
The bucket from which the data/object is being copied is called the Source Bucket, while the other is called the Destination Bucket. Versioning should be enabled in both the source and destination buckets for availing of cross-region replication. Once you have uploaded a set of data in the destination bucket, you cannot upload/replicate the same data from the source bucket.
CloudFront CDN (Computer Delivery Network) is a group of distributed servers used to deliver web content like webpages, etc. The delivery done by CloudFront CDN is based on the geographic region of the user, webpage origin, and the server being used for content delivery. The origin of all the files that are to be distributed by the CDN needs to be defined. An origin for CDN can be an S3 bucket, an AWS instance, or an elastic load balancer.
Two types of distribution are done by CloudFront CDN, web distribution and RTMP. Web distribution is used for websites, whereas RTMP is used for media streaming. There are around 50 edge locations distributed in various parts of the world. Edge locations are sites where the web content is cached during delivery.
AWS WAF is a firewall service that protects web applications from being exploited. They protect web applications against bots that may reduce the applications’ performance or unnecessarily consume resources. Users can control the incoming traffic on their web applications with the help of AWS WAF. Besides bot traffic, we can also prevent various common attacks on the web application via AWS WAF.
Users can create their traffic rule via AWS WAF to restrict any particular traffic pattern affecting the web applications’ performance. AWS WAF offers an API used to define the set of rules for governing the incoming traffic and automate the creation of security rules for web applications.
Simple Notification Service (SNS) offered by AWS is a means of sending messages from one application to another. It is a cost-effective solution that helps users publish messages from any particular application and forward them to other applications. SNS can also send push notifications to various mobile devices like Apple, Google, Windows phones, etc. One can also send an email/SMS to an HTTP endpoint using AWS SNS.
The best feature of SNS is that multiple types of endpoints can be grouped. SNS also supports various types of endpoints under one topic. For example, one can group Apple and Android recipients using SNS and send messages to all subscribers. SNS stores the messages already published in various availability zones to prevent any type of data loss.
For data persistence, your firm uses MYSQL 5.6. Your firm has recently announced that it needs to regularly collect batch process data from each region and generate regional reports. The reports will then be forwarded to various branch offices. What course of action will you suggest to perform this task in the shortest possible time?
AWS interview questions can also be based on server deployment and database-related issues. This question is an example of AWS interview questions for experienced posts.
I will suggest creating an RDS instance as a master for managing the firm’s database. For collecting/reading reports from various locations, we can create a read replica of the RDS instance in various regional headquarters. Installing a read replica at multiple locations will help us in reading reports in less time.
The retrieved data is stored in DynamoDB. The information is extracted into S3 for each user. Once the data is extracted, the application helps in data visualization on the user end. As a senior architect in your firm, you are asked to optimize the backend architecture so that the firm can slash costs. What are your recommendations?
AWS interview questions can change according to the different job roles applied for. This question is an example of AWS architect interview questions.
I would recommend using Amazon Elasticache to cache the data stored in DynamoDB. Using Elasticache will reduce the provisioned read throughput without affecting the performance of the system. Using Elasticache will also help our firm slash the cost as it is cheaper than any other provisioned IO.
Amazon EMR (Elastic MapReduce) is a web service that is widely used for data processing. Amazon EMR consists of a group of EC2 instances that are known as clusters. Cluster is the central component of Amazon EMR with a group of EC2 instances. A single EC2 instance in a cluster is called a node, and each node has a specific role attached to it. Node type defines the particular role connected to any node in a cluster.
Amazon EMR also consists of a master node responsible for defining the roles of other nodes in a cluster. The master node is also responsible for monitoring various nodes’ performance and overall health.
S3 transfer acceleration is used to make uploads to S3 quickly. S3 transfer acceleration does not upload directly to an S3 bucket as it uploads the file to the nearest edge location. A distinct URL is used by S3 transfer acceleration to upload the file to the nearest edge location and then transfer it to the required S3 bucket.
The CloudFront edge network is utilized by S3 transfer acceleration to make uploads quickly and optimizes the transfer process. The edge location to which the file is uploaded will automatically transfer the file to the S3 bucket in less time. The data between clients and S3 buckets can be securely transferred using Amazon’s S3 transfer acceleration service.
Kinesis is a data streaming platform offered by Amazon. There are three core services of Amazon kinesis that are as follows:
AWS interview questions are likely to be framed around AWS RDS as it is one of the world’s most widely used database services.
The benefits of using AWS RDS are as follows:
AWS CloudFormation is responsible for provisioning all the resources that are available within a cloud environment. It is also used to describe all the infrastructural resources in a cloud environment. Contrary to AWS CloudFormation, AWS Elastic Beanstalk provides a suitable environment to deploy and operate applications within the cloud.
The infrastructural need of applications running in the cloud is fulfilled by AWS CloudFormation, whereas AWS Elastic Beanstalk manages the lifecycle of applications deployed in the cloud. You can fulfill various infrastructural needs of various types of applications deployed in the cloud via AWS CloudFormation like enterprise applications, legacy applications, etc. AWS Elastic Beanstalk is not concerned with the types of applications as it is combined with the developer tolls to govern the lifecycle of deployed applications.
AWS CloudTrail is widely used for recording the user API activity associated with a particular AWS account. One can monitor various API activities using AWS CloudTrail, like response element, caller identity, call duration, etc. When you use AWS Config with CloudTrail, you know the configuration details associated with the AWS resources used. If something is wrong with your AWS resources, both AWS config and CloudTrail can help you identify them.
AWS config is more concerned with the changes that have been made to the AWS resources, whereas CloudTrail is concerned with the user that has made the changes. You can use both of them simultaneously for enhanced governance, compliance, and security policies.
One needs to configure a backup AWS Direct Connect for situations where the original one fails. Configuring a backup will help you shift connectivity to the second one if the original one fails. You can do BFD (Bidirectional Forwarding Detection) to detect failure conditions faster and generate backup accordingly.
One can also configure backup on an IPsec VPN connection so that the traffic can be automatically backed up. While using an IPsec VPN connection backup, all the traffic will be directed to the internet in case of a failure. If you haven’t ensured any of these backup methods, you will lose your connectivity whenever a failure occurs.
CloudFront always caches data to the nearest edge location before delivering the data to various users. If one requests a particular content via CloudFront and the content is not stored in the nearest edge location, it will be delivered from the original server. The user’s request will not go in vain as the content will be delivered. However, we may increase the latency as the content is being delivered from the original server and not from the nearest edge location.
In this case, a cached version of the data will also be stored in the nearest edge location. So we can reduce the latency if a request for the same data is made again. Only for the first time will it be delivered from the original server.
It is another example of ‘AWS interview questions that are scenario-based. It is also a type of AWS cloud architect interview question.
Yes, one should launch the EC2 instances in a VPC. VPC is the best way of connecting the EC2 instances to our firm’s data center. Once each instance is connected to the VPC, we can easily assign a predetermined IP address to each EC2 instance. It will help access the public cloud resources like they are stored in a private network.
In AWS, volume is block-level storage that we can assign to an EC2 instance. We can compare this to a hard disk from where the user can read or write the data. You pay for the data used by volumes as it is a way of measuring the storage section.
A snapshot is formed when we have a volume as it is a single point in time view of a volume. A snapshot is formed when the data stored in a volume is copied to another location at a single point in time.
If event processing via AWS Lambda is done in synchronous mode, then an exception will be displayed on the application used to call the function during failure. However, if an event is being processed in asynchronous mode, then a function will be called a minimum of three times in case of failure.
Amazon WorkSpaces provides virtual and cloud-based desktops to work on, also known as workspaces. You do not need to deploy physical hardware and software by using Amazon WorkSpaces. You can install Microsoft Windows or Linux virtual desktops with the aid of Amazon WorkSpaces. Users can access virtual desktops via various devices or web browsers.
WorkSpaces allows users to choose from a wide range of available software/hardware configurations. It also provides a persistent desktop feature so that you can start working from where you had left off. Amazon also provides a WAM (WorkSpaces Application Manager) for deploying and managing applications on virtual desktops.
The key to cracking an AWS interview is to know about Amazon’s wide range of services. This question is a type of basic AWS interview question asked.
AWS IAM (Identity and Access Management) allows users to access AWS resources/services securely. One can create groups of users using AWS IAM and can assign them a customized set of permissions. Access to AWS resources can be allowed to any particular group/user via AWS IAM. One can access the IAM features under the ‘AWS Management Console’ section of your AWS account.
49. Mention the differences between security groups and a network access control list.
AWS interview questions can be related to cloud access, security, customer service, and many more topics. One should practice AWS interview questions from diverse topics related to AWS services to crack the interview.
Security groups are used to control access to instances, while the network access control list is concerned with controlling access at the subnet level. Network access control lists can add rules for both ‘allow’ and ‘deny,’ whereas security groups can add only rules for ‘allow.’
50. What is AWS S3?
AWS’s cloud-based object storage service with unparalleled scalability, data availability, security, and performance is known as Amazon S3. On Amazon Web Services, the service can be used for online backup and archiving of data and applications (AWS).
Yes, Amazon S3 is a worldwide service. It offers object storage via a web interface and runs its global e-commerce network on Amazon’s scalable storage infrastructure.
Amazon S3 (Amazon Simple Storage Service) is a service for storing objects. Amazon S3 enables users to store and retrieve any amount of data at any time from anywhere on the internet.
A bucket in AWS Simple Storage Service (S3) is a public object storage service such as file folders, which store objects containing data and descriptive metadata.
You do not wish to connect an instance to an S3 bucket, as Block storage is not the same as object storage, which has serious consequences.
S3 buckets support the feature of versioning. The bucket’s versioning is enabled globally. Versioning allows one to track various changes made to a file over time. If versioning is enabled, each uploaded file receives a unique Version ID. Consider a bucket that contains a file, and a user uploads a new modified copy of the same file to the bucket; both files had a unique Version ID and timestamps from when they were uploaded. So, if one needs to go back in time to an earlier state of the file, versioning makes it simple.
AWS allows its users to carry out all the essential DevOps practices easily. The tools provided as a part of AWS greatly help to automate manual tasks and assist teams in managing complex environments. They also aid engineers in working effectively with high-velocity DevOps operations.
Ideally, in the DevOps practice, the Development and Operations are one single entity. This means that, with Cloud Computing in hand, any form of Agile development will have a straight-up advantage in creating strategies and scaling practices to change business adaptability. If you consider Cloud Computing to be a car, then DevOps would be its wheels.
Using AWS for DevOps has numerous benefits. Following are a few of them:
One should analyze their competencies and apply for a suitable job role in Amazon. If you use a developer/architect post in AWS, focus more on AWS cloud architect interview questions. One should also prepare scenario-based interview questions as a candidate can also encounter them. AWS interview questions revolve around the various services offered by Amazon.
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