I'm into amazon kdp if all these stuff you're saying can help?
What's the niche?
Most of the software I list would be helpful to anyone in IM/dev, however...
I am creating a cluster for a reason that may/may not affect you in your niche...
I will have large swings in traffic/data... massive swings. The system I am building will "stretch" and "retract", extending from my four servers into AMZ/GPC adding servers/apps/storage when needed, and dropping those resources when the need has passed.
In POD or Kindle this could come in handy if you have knowledge of "holiday" swings or other...
The keyword research platform I am adding to the backend doesn't need to be clustered or even in the cloud to work for others...
So yeah, most of the info is relevant to any niche... but do you need it?
I would say about 50% of all of my yearly traffic will come crashing in within a few weeks window.... on a schedule of alternating two year sets with 4X-6X more traffic than the others...
I have a solid contact base of around 100 million individuals in my niche with a stated preference and 30 million business leads (colder than the ind).
The inbound/outbound backend never stops year round... but also peaks when the front end does (but at different rates and cadences).
Aside from the use of the cloud and containers, most of the stuff listed above is like the stuff you probably use now, but with new names.
Drupal = Wordpress
YugabyteDB = Mariadb/MySQL
Blueseer - Odoo
etc...
That's 8 for the niche request... 2 more...