system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When an artist/band's "Greatest Hits" or "Best Of" album is released, how does the process take shape?

Is there a general timeframe after the artists retirement (or most previous release) that it is considered the best time for a summation/reminder of the artist?

And would the idea typically suggested by the label, or is it moreso the manager/artist that feel the need for it?
gpt
A Greatest Hits album is common in any record deal. After so many releases, the artist and the label (to varying degrees, of course) will get together to assemble the track listing and many times, the artist will be required to produce a number of exclusive tracks for the release. All of this will depend on the artist and their deal.