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DataStructures / Amazon Web Service (AWS)

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What is AWS?

Amazon Web Service (AWS) is a collection of remote computing services also known as a cloud computing platform. AWS offers IaaS or Infrastructure as a Service.

Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. There are over 175 fully-featured services from data centers globally.

What is AWS Elastic Beanstalk?

AWS Elastic Beanstalk is an orchestration service offered by Amazon Web Services for deploying applications that orchestrate various AWS services, including EC2, S3, Simple Notification Service, CloudWatch, autoscaling, and Elastic Load Balancers.

Explain AWS CodePipeline.

AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates. CodePipeline automates the build, test, and deploy phases of your release process every time there is a code change, based on the release model you define. This enables you to rapidly and reliably deliver features and updates. You can easily integrate AWS CodePipeline with third-party services such as GitHub or with your own custom plugin.

What is AWS Environment?

An environment is a collection of AWS resources running an application version. Each environment runs only one application version at a time, however, you can run the same application version or different application versions in many environments simultaneously. When you create an environment, Elastic Beanstalk provisions the resources needed to run the application version you specified.∫

What is Amazon Lightsail?

Lightsail is an easy-to-use cloud platform that offers you everything needed to build an application or website. Lightsail is ideal for simpler workloads, quick deployments, and getting started on AWS. It's designed to help you start small, and then scale as you grow. Lightsail is ideal for Simple web applications, Websites, business software, and dev/test/QA environment.

What is Lambda in AWS?

AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code.

Mention a few key components of AWS?

Route 53, is a DNS web service.

Amazon VPC (Virtual Private Cloud) provides versatile network performance in AWS, which means it provides integrated security and a private cloud.

Simple E-mail Service allows sending e-mail using RESTFUL API call or via regular SMTP.

Identity and Access Management (IAM) provides enhanced security and identity management for your AWS account.

Simple Storage Device or (S3) is a storage device and the most widely used AWS service.

Elastic Compute Cloud (EC2) provides on-demand computing resources for hosting applications. It is handy in case of unpredictable workloads.

Elastic Block Store (EBS) offers persistent storage volumes that attach to EC2 to allow you to persist data past the lifespan of a single Amazon EC2 instance.

CloudWatch monitors AWS resources, allows administrators to view and collect key Also, one can set a notification alarm in case of trouble.

What is Amazon S3?

Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services that provides object storage through a web service interface. S3 provides industry-leading scalability, data availability, security, and performance.

What is cloud computing?

Cloud computing comprises IT resources such as infrastructure, platform, or software as their services are used over the Internet on a pay-per-use basis. Cloud service providers are the companies that have public cloud or data centers that offer services like computation, storage, database, operations, migration, messaging, Notifications, and analytics services.

Some of the leading cloud service providers are AWS, Microsoft Azure, Google Cloud Platform, IBM Cloud, Rackspace, Verizon Cloud and Heroku.

What is Amazon SES?

Amazon Simple Email Service (SES) is a flexible, and scalable email service that enables developers to send mail from within any application in a cost-effective way. Amazon SES can be configured quickly to support several email use cases, including transactional, marketing, or mass email communications. With Amazon SES, it is easy to send email securely, globally, and at scale.

What is AMI?

AMI (Amazon Machine Image) is a template that provides the information (an operating system, an application server, and applications) required to launch an instance, which is a copy of the AMI running as a virtual server in the cloud. You can launch instances from as many different AMIs as you need.

What is AWS Auto Scaling?

Auto-scaling function in AWS allows you to provision and launch new instances whenever there is a demand. It allows you to automatically increase or decrease resource capacity in relation to the demand.

AWS Auto Scaling monitors your applications and automatically adjusts capacity to maintain steady, predictable performance.

What is AWS CloudFront?

Amazon CloudFront is a fast content delivery network(CDN) offered by Amazon Web Services. Amazon CloudFront service securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds, all within a developer-friendly environment, thus improving access speed for downloading the content.

what is AWS CloudFormation?

AWS CloudFormation provides a common language for you to model and provision AWS and third-party application resources in your cloud environment. CloudFormation allows you to use programming languages or a simple text file to model and provision, in an automated and secure manner, all the resources needed for your applications across all regions and accounts. This gives you a single source of truth for your AWS and non-AWS resources.

"Resources": {
  "MyInstance": {
    "Type": "AWS::EC2::Instance",
    "Metadata" : {
      "AWS::CloudFormation::Init" : {
        "config" : {
          "packages" : {
            :
          },
          "groups" : {
            :
          },
          "users" : {
            :
          },
          "sources" : {
            :
          },
          "files" : {
            :
          },
          "commands" : {
            :
          },
          "services" : {
            :
          }
        }
      }
    },
    "Properties": {
      :
    }
  }
}

What is VPC in AWS?

Virtual Private Cloud (VPC) allows you to customize your networking configuration. It is a network that is logically isolated from another network in the cloud. It allows you to have your IP address range, internet gateways, subnet, and security groups.

What is EBS in AWS?

Elastic block storage (EBS) is a storage system that is used to store persistent data. EBS is designed to provide block-level storage volumes and to use EC2 instance for both transactions and throughput intensive workloads at any scale.

Amazon Elastic Block Store provides raw block-level storage that can be attached to Amazon EC2 instances and is used by Amazon Relational Database Service.

Difference between EBS and S3.

EBS.S3.
Highly Scalable.Less scalable.
Block storage.Object storage.
EBS provides faster retrival operations.S3 less speed when compared to EBS.
User can access EBS only via the given EC2 instance.Anyone can access S3 as it is available public.
supports File system interface.supports web interface.
Explain Elastic IP addresses in AWS.

An Elastic IP address is a static IPv4 address designed for dynamic cloud computing. By using an Elastic IP address, you can mask the failure of an instance or software by rapidly remapping the address to another instance in your account. An Elastic IP address is allocated to your AWS account and is yours until you release it.

An Elastic IP address is a public IPv4 address, which is reachable from the internet.

What is Amazon API Gateway?

Amazon API Gateway is a fully managed service that developers can use to create, publish, maintain, monitor, and secure APIs at any scale. APIs act as the front door for applications to access data, business logic, or functionality from your backend services. Using API Gateway, you can create RESTful APIs and WebSocket APIs that enable real-time two-way communication applications. API Gateway supports containerized and serverless workloads, as well as web applications.

What are security groups in AWS?

A security group acts as a virtual firewall for your EC2 instances to control incoming and outgoing traffic. Inbound rules control the incoming traffic and outbound rules control the outgoing traffic for your instance. When Amazon EC2 decides whether to allow traffic to reach an instance, it evaluates all of the rules from all of the security groups that are associated with the instance.

You can add rules to each security group that allows traffic to or from its associated instances. You can modify the rules for a security group at any time. New and modified rules are automatically applied to all instances that are associated with the security group.

When you launch an instance, you can specify one or more security groups. If you don't specify a security group, Amazon EC2 uses the default security group.

What is the S3 bucket in AWS?

An Amazon S3 bucket is a public cloud storage resource available in AWS Simple Storage Service (S3). Amazon S3 buckets are similar to file folders, store objects that have data and descriptive metadata.

What is NAT gateway?

NAT stands for Network Address Translation. NAT gateways enable instances in a private subnet to connect to the internet but prevent the internet from initiating a connection with those instances.

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