How can I parameterize AWS SAM templates?

How can I parameterize AWS SAM templates?

You can parameterize AWS SAM templates using the Parameters section in your template.yaml file. This allows you to define variables that can be passed at deployment time.

Can you give me an example of how to define parameters?

Sure! Here's a simple example:

Parameters:
  MyParameter:
    Type: String
    Default: "default-value"

This defines a parameter called MyParameter with a default value.

How do I use this parameter in my resources?

You can reference the parameter in your resources like this:

Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Environment:
        MY_ENV_VAR: !Ref MyParameter

What if I want to pass the parameter value during deployment?

You can pass the parameter value using the --parameter-overrides flag in the AWS CLI when you deploy, like this:

sam deploy --parameter-overrides MyParameter=my-value