AWS CLI

Control multiple AWS service from the command line and automate them through scripts.

AWS CLI is installed with Python script, you should install Python before install AWS CLI.
AWS CLI lets you interact with AWS from anywhere by simply suing a command line.

you can from the CLI perform action such as :

• List buckets, upload data to S3
• Lanch, stop, start or terminate EC2 instance
• Update security groups, create subnets
• etc...

there are some important flags that you should know:

• --profile : switch between AWS accounts
• --output : change the output between json, table and text

AWS SDK

Control multiple AWS service using programing languages

A Software Development Kit(SDK) is a set of tools and libraries that you can use to create applications for a specific software package.

THE AWS SDK is available for the following languages:

• C++
• Go
• Java
• Javascript
• .NET
• NodeJs
• PHP
• Python
• Ruby

Programmactic Access

When you enable Programmatic Access for AWS users, they will have the ability create Access Key ID and Secret Access Key
These are collectively known as AWS Credentials

You will want to stored your credentials in your user's home (ex. ~/.aws/credentials)
The credentials files allow you to manage multiple credentials(called profiles)