DVA_EN Two ways to simulate IAM policies – IAM Policy Simulator / –dryrun
Two ways to simulate IAM policies using CloudFormation (IAM Policy Simulator / --dryrun option).
AWS Developer Associate (DVA)
DVA_EN 
DVA_EN Storing session data from web apps created with API Gateway and Lambda in DynamoDB
Learn how to use CloudFormation to store session information for web apps created with API Gateway and Lambda in DynamoDB.
DVA_EN Email notification via SNS when error occurs in CodePipeline
This section describes how to use CloudFormation to send email notifications via SNS when an error occurs in CodePipeline.
DVA_EN Trigger an image upload to S3 invokes Lambda function to create thumbnails
Using CloudFormation, we will show you how to trigger an image upload to S3 and run a Lambda function to create a thumbnail.
DVA_EN Delegate access rights between AWS accounts using cross-account roles
Use CloudFormation to verify delegation of access rights between AWS accounts using cross-account roles.
DVA_EN Step Functions – Conditional branching using Choice State
Using CloudFormation, we will show you how to configure conditional branching using Choice State in Step Functions.
DVA_EN Introduction to ElastiCache with CFN – Redis Cluster Enabled
Introduction to ElastiCache (Redis cluster enabled) using CloudFormation.
DVA_EN Introduction to Step Functions with CFN
Here is a configuration for an introduction to Step Functions with CloudFormation.
DVA_EN Connect to RDS outside of Lambda handler method to improve performance
Verify the extent to which connecting to RDS inside and outside the handler method improves performance using CloudFormation.
DVA_EN Change Permission for Guest/Sign-in users in Cognito ID Pool
Using CloudFormation, we will show you how to configure the Cognito ID pool to change permissions for guest/sign-in users.