Functional Programming and Architecture

Functional programming languages automatically guide you to write composable and autonomous code because there is no mutable state and no side effects I mean they are explicit so this is like this alignment that I see between functional programming and architecture where we compose smaller parts of the subsystems into bigger parts. We can look at these those big systems that we have as kind of no functional components that play a certain role in different business user processes. It's like you know picture of how functional programming works on the implementation level.