> For the complete documentation index, see [llms.txt](https://mamawhocode.gitbook.io/aws/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mamawhocode.gitbook.io/aws/services/compute/lambda/lambda-api.md).

# Lambda API

## Invoke API

`InvovationType` has 3 options:

* `RequestResponse` (default): invoke the function synchronously.
* `Event`: invoke function asynchronous. Send events that fail multiple times to the function's dead-letter queue (if it's configured)
* `DryRun`: verify that the user or role has permission