Exploring Software Release Management T_T

I've been trying to get a brief understanding of what the software release management (SRM) really is. The sketch below shows my personal interpretation:

I've been surfing around and I think that the following (sorted) URLs might be useful for introducing SRM:

1) "Release Management: Where to Start?"
2) "Agile Release Train Community of Practice"
3) "Software Versioning"
4) "Release Management in Large Free Software Projects - Video"
5) "Information Technology Infrastructure Library (ITIL)"
6) "DevOps"
7) "Software Release Management Best Practices"
8) "7 Ways to Improve Your Software Release Management"

Have fun then :)