Basic REST and JSON RPC are very simple to start with, but have common problems when application gets bigger. How do you represent relations, pagination, filtering etc? My go-to specification for structuring JSON documents is https://jsonapi.org/ It covers most basic needs of a standard API.
Operating a blimp on Venus would be a bit tougher than on Earth, partly because the density of Venus atmosphere is only 95 % of our air (less lift per lifting gas volume), and also because of the incredibly violent 100 m/s winds, 93 bar pressure and a temperature of 470 °C.
Schema(or data in a database) in your release N should be compatible with release N-1, so you can revert your code to previous working version with new schema. That's the only way to ship new releases without stopping service for maintenance.