AWS › AWS Serverless Application Model (SAM)
How can SAM templates be organized and parameterized to support deploying the same serverless application consistently across multiple environments like development, staging, and production?
AdvancedAnswer
SAM templates support parameters and conditions that let you customize resource configuration based on the target environment, such as using a smaller Lambda memory allocation and a shared development DynamoDB table for a dev environment while using higher memory and dedicated resources for production, combined with separate configuration files for each environment referenced during sam deploy, allowing a single template definition to be reliably deployed consistently with appropriate settings across every environment.
sam deploy --config-env production --parameter-overrides Environment=production MemorySize=512Real-world example A development team maintains a single SAM template with environment specific parameter overrides, allowing the exact same application definition to be deployed with smaller resource allocations to their development environment and production grade settings to their production environment.