AWS Cloud Computing Basics

1. Core AWS Concepts

• Cloud Computing: On-demand delivery of IT resources over the internet with pay-as-you-go pricing
• AWS Account: Your personal AWS platform access point and management hub
• Region: Geographic location where AWS clusters data centers
• Availability Zone (AZ): Multiple isolated locations within each region,connected to each other with fast ,private fiber optic networking. Have all the h/w devices. Connected with high bandwidth , low latency
• Edge-locations: Cached content at edge locations for high performance delivery of content. Amazon Route 53, Amazon CloudFront.(200)

2. Benefits

• Trade upfront expense for variable expense
• Stop guessing capacity,running and maintaining data centres.
• Increase speed an agility
• Go global in minutes.

3. Models

• Infrastructure as a service(IaaS): Basic building blocks for cloud IT ,provide access to networking features, computers(virtual or h/w),data storage,highest level of flexibility & management control over your IT resources.e.g EC2,Amazon S3(simple storage service),,Amazon Route 53,,Amazon RDS
• Platform as a service(PaaS): for organisations,e.g. AWS Elastic Beanstalk
• Software as a service(SaaS): Office 365 ,web based emails,salesforce.

4. Serverless Computing

• build & run application w/o servers.
• also called function as a service(FaaS) or abstracted services.
• e.g AWS S3,SNS,DynamoDB,Lambda