I'm interested in implementing a very simple site using Magento 2 through its REST API alone. I have actually already done this with a client project and overall it went fairly well (though I ended up implementing a number of missing / not totally usable service endpoints), but my next implementation will be for my own personal site hosted on a very minimal / barebones server.
Because of this, I'm interested in getting as much performance out of Magento as possible, specifically in the application itself (in other words, outside of caching, redis, etc).
I'm wondering if there are techniques, modules, best practices, etc, that others have found that would remove a significant amount of overhead that might not be necessary in a headless implementation.
I suspect there may not be very many "easy wins" that are of any significance, but I imagine I'm not the first out there who is interested in using Magento 2 headless and who doesn't want any extra overhead being added by tasks that may not be relevant when only using the API.