DVA_EN Elastic Beanstalk deployment policy: Rolling with an additional batch
Using CloudFormation, check the Elastic Beanstalk deployment policy: Rolling with an additional batch.
NAT Gateway
DVA_EN 
AWS_EN Build Elastic Beanstalk ALB environment using CloudFormation
Use CloudFormation to build an Elastic Beanstalk ALB environment.
SOA_EN Use S3 bucket policy to allow or deny access on an address basis – aws:SourceIp
Use CloudFormation to build a configuration to allow or deny access on an address basis (aws:SourceIp) using an S3 bucket policy.
AWS_EN Connect to RDS from EC2 (Linux)/Lambda using IAM authentication
How to connect to RDS from EC2 (Linux)/Lambda with IAM authentication using CloudFormation.
AWS_EN Using Amazon ECS Exec to access ECS (Fargate) containers in private subnet
Learn how to use CloudFormation to access ECS (Fargate) containers in a private subnet using Amazon ECS Exec.
SAA_EN Two ways to access DynamoDB from private subnets
Two ways to access DynamoDB from private subnets using CloudFormation.
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).
SAA_EN 3 ways to access S3 from private subnet
Here are three ways to access S3 from private subnets using CloudFormation.
SAA_EN Accessing DynamoDB Accelerator (DAX) with EC2/Lambda
Learn how to use CloudFormation to access the DynamoDB Accelerator (DAX) with EC2/Lambda.
AWS_EN 3-Tier Architecture with Apache/Python(uWSGI)/RDS(Aurora)
Use CloudFormation to build 3-tier architecture with Apache/Python(uWSGI)/RDS(Aurora).