Application (A container for all resources)
AWS::Serverless::Application
Lambda Functions and Layers
AWS::Serverless::Function
AWS::Serverless::LayerVersion
API Gateways
AWS::Serverless::Api
AWS::Serverless::HttpApi
DynamoDB Tables
AWS::Serverless::SimpleTable
Step Functions
AWS::Serverless::StateMachine
For other resources, use AWS CloudFormation definition