Every project has a role of Release Manager. Some teams are small enough that this role is filled by a team lead, project manager, architect, etc. some teams rotate this role to spread the pain and knowledge. Large teams have a defined employed role with title of Release Manager that could even include a team (think shipping large DoD contractual projects)

There’s whole books on this subject. I think this blogpost does a great job of summarizing the goals for large tech company shipping — well written — nicely done