Learn CLOUDFORMATION with Real Code Examples

Templates define resources, parameters, outputs, and metadata

Stacks are created from templates and deployed to AWS

Stack sets manage multiple stacks across accounts and regions

Change sets allow preview of updates before deployment

Drift detection compares stack state with actual resources

Template -> Parse -> Resource dependency resolution -> Create/update stack -> AWS API calls

Supports parameterization and dynamic values

Nested stacks allow modular design

Outputs export information to other stacks

Change Sets preview resource changes before deployment

Single-stack deployments

Nested-stack modularization

StackSets for multi-account management

Cross-stack references via Outputs/Exports

CI/CD-driven automated deployment

Serverless web application stack (API Gateway + Lambda + DynamoDB)

Enterprise multi-VPC architecture with RDS and S3

CI/CD pipeline automation with CloudFormation

Data lake deployment with S3, Glue, Athena

Monitoring and logging infrastructure with CloudWatch

Declarative infrastructure

Idempotent stack operations

Safe rollback on errors

AWS-native service integration

Template modularity and reusability

Use nested stacks to split large templates

Use StackSets for multi-account deployments

Parameterize templates for different environments

Monitor stack limits and quotas

Leverage automated CI/CD pipelines for large deployments

Refactor legacy templates to modular nested stacks

Update deprecated resource types

Test Change Sets in sandbox before production deployment

Review IAM permissions for stack operations

Leverage StackSets for multi-account migrations