PDCA-Cycle

https://12factor.net/

https://medium.com/@cabot_solutions/12-core-principles-of-agile-developent-process-3a2f5e7f7a3a

https://www.heflo.com/blog/pdca/pdca-concept/

https://www.heflo.com/blog/pdca/what-is-the-pdca-cycle/