What is software development actually …

Choose any two — Maintainable, Configurable, Speed. When creating a new software, you could only have two out of the following: Maintainable Configurable Speed If you choose to focus on maintainability and configurability, it’ll take a long time to develop and performance might be impacted. If you choose to focus on maintainability and speed (of development and performance), you might not have a configurable system (i.e. with many features and options).