[babyyoda]

Worth noting this isn't bring any application and publish as AWS Lambda, but rather build from a specific Lambda base image and package your Lambda code into it. Fargate likely closer to what you are describing here

[mjb]

You don't need to build from a Lambda specific base image - you can use (nearly) any base image you choose. Your application just needs to implement the Lambda runtime API, which we provide clients for in multiple languages.

[babyyoda]

Sure - and looks like runtime API isn't terrible, but still not a "lift and shift my express app as a Lambda" which I can do with Cloud Run

[zrail]

You don't have to use their base image, you can implement the Lambda API if you want. They're supplying API toolkits for various languages.