From Diablo Wiki
The D3 Team often refers to their development process as "iterative," or to features having undergone numerous "iterations." By this they mean that each element of the game is gone over time and time again, usually by different individuals and/or teams. Everyone adds a little bit to everything, and by this slow and steady group effort the functions and graphics and everything else are gradually improved over time.
it•er•a•tion \'i-t€-"rA-sh€n\ noun (15c)
- 1 : the action or a process of iterating or repeating: as
- a : a procedure in which repetition of a sequence of operations yields results successively closer to a desired result
- b : the repetition of a sequence of computer instructions a specified number of times or until a condition is met — compare recursion