Serverless computing: Don’t make the wrong choices | InfoWorld
Serverless computing removes you from having to provision a server yourself; you simply write functions, and the resources you need are automatically allocated to that function.
There is always a BUT:
… new applications are a good fit for serverless computing, old applications often are not—and migrating those old applications to serverless could be more work than enterprises bargained for …
Even if the languages are supported, it takes a huge effort to refactor an application to properly take advantage of serverless computing.