AWS

Notes

EBS Volumes:

Each instance that you launch has an associated root device volume, either an Amazon EBS volume or an instance store volume. You can use block device mapping to specify additional EBS volumes or instance store volumes to attach to an instance when it's launched.

You can specify a block device mapping as part of creating an AMI so that the mapping is used by all instances launched from the AMI. Alternatively, you can specify a block device mapping when you launch an instance, so this mapping overrides the one specified in the AMI from which you launched the instance.

Layering Stacks : reference : https://youtu.be/cKQtPZwf97s?t=1955

CloudFormation parameter types:

CloudFormation currently supports the following parameter types:

String – A literal string
Number – An integer or float
List<Number> – An array of integers or floats
CommaDelimitedList – An array of literal strings that are separated by commas
AWS::EC2::KeyPair::KeyName – An Amazon EC2 key pair name
AWS::EC2::SecurityGroup::Id – A security group ID
AWS::EC2::Subnet::Id – A subnet ID
AWS::EC2::VPC::Id – A VPC ID
List<AWS::EC2::VPC::Id> – An array of VPC IDs
List<AWS::EC2::SecurityGroup::Id> – An array of security group IDs
List<AWS::EC2::Subnet::Id> – An array of subnet IDs

https://aws.amazon.com/blogs/devops/using-the-new-cloudformation-parameter-types/

API gateway Features

Authentication ( IAM, Lambda/OAuth , Cognito )
Request Throttling ( usage plans via API Keys )
Payload transformation ( Velocity Templates )
Integration with AWS Services

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