There's also a difference between "we have a dependency on this versioned library that we have archived and deployed" and "we have a dependency on this library

There's also a difference between "we have a dependency on this versioned library that we have archived and deployed" and "we have a dependency on this library which we refer to dynamically at run-time". But the second one gets you closer to the mythical perfection called "serverless" because it uses so many different servers you can't keep track of them all.