I'm still new to Jira, but I've already researched a lot into the ecosystem as much as I could because I'm aware it's possible to develop for Cloud and Server at the same time to an extent (Client-Side UI, REST API).
I am not sure which Connector I should use in order to have a API that can be used for both. Such as using Conector for Nodejs because I want to use Atlaskit and React, or for Springboot so it Java can access it for Server as well.