Small note: I wouldn't count the serverless framework as cloud agnostic. Yes you can use the framework for all major clouds but you have to adjust your project

Small note: I wouldn't count the serverless framework as cloud agnostic. Yes you can use the framework for all major clouds but you have to adjust your project for that. Serverless does not abstract the events, function context or other service APIs which would be needed if it would be really cloud agnostic = you can deploy your project to different providers without changes.