KISS, DRY, and YAGNI are commonly referred to as “software design principles” or more specifically as “programming principles” (programming principles / coding principles).
Software design principles
What is SOLID? Principles, how it works, and practical applications
Applying SOLID principles in programming makes the code easier to maintain, extend, and reduces errors. Not only does it ensure clarity, but SOLID also serves as the foundation for building clean code, supporting effective teamwork, and improving software quality.