#AWS  #DevOps  
# Topic covered
* Cloud computing and types
  * Software as a Service(SaaS)
  * Platform as a Service(Paas)
  * Infrastructure as a Service(IaaS)
* Why cloud computing?

1.1 What is Cloud computing?

Cloud Computing is a remote virtual pool of on-demand shared resources offering compute, storage, database, and network services that can be rapidly deployed at scale.

# Types of Cloud Computing

* Software as a Service(SaaS)
* Platform as a Service(Paas)
* Infrastructure as a Service(IaaS)

SaaS vs PaaS vs IaaS

Software as a Service(SaaS)

  • SaaS model provides cloud-based tools and applications to consumers and businesses
  • SaaS helps you to eliminate the need to have IT staff download and install applications on each computer
  • SaaS model is used by end users
  • Eg: Google Docs, Microsoft’s Office 365 online, etc

Platform as a Service(Paas)

  • PaaS model allows them to host, manage, and secure their own applications
  • PaaS provides freedom to build the software without the need to worry about software updates
  • PaaS is the set of tools and services designed to make coding and deploying those applications quick and efficient
  • Eg: Heroku, AWS Lambda
  • Elastic Beanstalk

Infrastructure as a Service(IaaS)

1.2 Why cloud computing?

  • Scalability, high availability, disaster recovery, serverless, etc.—that make cloud computing such a powerful service.
  • Cost Savings
    • No Physical hardware required for –> Computing, Storage, Database
  • Pay-as-you-go
    • Use fewer resources –> Pay-less
    • Upgrade resources –> Pay according to requirement
  • Security
    • Data security is one of the biggest advantages of cloud computing.
    • Cloud offers many advanced features related to security and ensures that data is securely stored and handled.
  • Loss Prevention
    • No risk of losing data, Various copies are stored on the cloud
    • Once the data is stored in the cloud, it is easier to get back up and restore that data using the cloud.

AWS Introduction

  • Amazon Web Services (AWS) is a comprehensive cloud computing platform
  • It includes infrastructure as a service (IaaS) and platform as a service (PaaS) offerings.
  • Designed a doc in 2003
  • 2004: SQS stands for “Simple Queue Service” and was officially launched in 2004
  • 2006: AWS launched

Advantages of AWS

  • Flexibility
    • AWS does not require learning new technologies
  • Cost-effectiveness
    • No upfront investment
    • Pay-As-You-Go
  • Scalability
    • Autoscaling and elastic load balancing techniques are automatically scaled up or down when demand increases or decreases respectively.
  • Security
    • AWS provides end-to-end security and privacy to customers.

AWS Services

Compute Service

  • Amazon EC2
  • Amazon Elastic Beanstalk
  • Amazon Lambda
  • Auto Scaling
  • Elastic Load Balancer

Storage and Content Delivery service

  • Amazon EBS
  • Amazon EFS
  • Amazon S3
  • Amazon Glacier
  • AWS Snowball

Database Services

  • RDS
  • Amazon DynamoDB
  • Amazon ElasticCache
  • Amazon Redshift

Networking Services

  • Amazon VPC
  • Amazon Route 53
  • AWS Direct Connect

Management Tools

  • Amazon CloudWatch
  • Amazon CloudTrail
  • AWS OpsWorks
  • AWS Trusted Advisor
  • AWS CloudFormation

Security & Identity

  • AWS Identity Access Management (IAM)
  • AWS key management services (KMS)

Application Services

  • Amazon SES
  • Amazon SNS
  • Amazon SQS
  • AWS SWF

Developer Tools

  • CodePipeline
  • CodeDeploy
  • CodeBuild
  • CodeCommit

AWS Services Trail info

Amazon S3

  • 12 MONTHS FREE
  • 5 GB of Standard Storage
  • 20,000 Get Requests
  • 2,000 Put Requests

Amazon EC2

  • 12 MONTHS FREE
  • 750 hours per month of Linux, RHEL, or SLES t2.micro or t3.micro instance dependent on region
  • 750 hours per month of Windows t2.micro or t3.micro instance dependent on region

Amazon Elastic Block Store

  • AWS Free Tier includes 30 GB of storage,
  • 2 million I/Os,
  • 1 GB of snapshot storage with Amazon Elastic Block Store (EBS).

Amazon Elastic File System

  • 5 GB of standard storage
  • for 12 months with the AWS Free Tier

Amazon Redshift

  • 2 Month free trial
  • 750 hours per month for 2 months
  • DC2.Large node with 160 GB of compressed SSD storage

Amazon RDS

  • 12 MONTHS FREE
  • Each calendar month
    • 750 hrs of Amazon RDS in a Single-AZ db.t2.micro Instance.
    • 20 GB of General Purpose (SSD) database storage
    • 20 GB of storage for database backups and DB Snapshots

AWS CloudFront

  • Always free with Each month
    • 1 TB of data transfer out
    • 10,000,000 HTTP or HTTPS Requests
    • 2,000,000 CloudFront Function Invocations

Elastic Load Balancing

  • 750 hours free per month
  • 15 GB of data processing for Classic load balancers
  • 15 LCUs for Application Load Balancers.

Reference