This refers to the Language Server Protocol [1] which is intended to decouple the IDE features from your editor so you can use it with any editor, such as Vim.
Re:Vim 8.2
by read_if_gay_ on Thursday December 12, 2019 @12:38PM
(#21774128)
Check out coc aka Conquer of Completion
I just want some basic stuff: autocomplete + indentation will probably achieve 90% of what I want from a Python IDE.