Micropub is a W3C standard for publishing that is incredibly easy to implement. The advantage of having a platform agnostic posting API that supports simple form encoded or json encoded posts will instantly open up WordPress to many additional editors.
Hi David, same as with your other request, do you have some sources you would like to add so interested others can read up on it?
https://micropub.net/
There's a plugin as well
https://wordpress.org/plugins/Micropub/
Who else is using Micropub?
Server side or client side? There are many clients and servers and more every day.
Found some info on that:
https://micropub.rocks/implementation-reports/clients/
https://micropub.rocks/implementation-reports/servers/