How Can I Deploy Just a Lambda Function Using CDK?

It's a good idea to separate your stacks by volatility instead of using nested stacks. Try defining each resource in its own stack and pass parameters between them. For instance, if you have a DynamoDB table in a storage stack, save its name as a string parameter and reference it in your Lambda stack. This allows you to manage permissions and environment variables between the two properly!

If your CDK app is just for a function, then only that function will be deployed. But if your setup includes multiple resources along with a function, the first deployment will trigger everything. After that, if you only change the function, then only that one will be updated during redeployments. Also, why do you think SAM is your only option? Is there a particular reason you need to deploy only a function instead of the full stack?

One simple solution is to create a new git branch from your current deployment, modifying only the Lambda function there. This ensures that all dependencies are correctly managed, so if you reference a resource that doesn't exist yet, it won't fail during compilation. Just a thought!

I think there might be a misunderstanding! You should be able to deploy a single resource within your CDK setup. Just because a stack has multiple resources doesn’t mean you can't deploy when only one resource changes. Also, if your function needs permissions, don't forget to attach a role to it!

Hey there! Sorry to hear you're stuck. I found a couple of AWS documentation links that might help you with CDK stacks and nested stacks: [CDK Stacks Documentation](https://go.aws/4oM1TQu) and [Nested Stacks Documentation](https://go.aws/45ZakR4). Hopefully, this clarifies things!