Continuous design
MODULAR DESIGN PROCESS IN WHICH COMPONENTS CAN BE FREELY SUBSTITUTED TO IMPROVE THE DESIGN, MODIFY PERFORMANCE OR CHANGE ANOTHER FEATURE AT A LATER TIME
Incremental design; Evolutionary design
Evolutionary design, continuous design, evolutive design, or incremental design is directly related to any modular design application, in which components can be freely substituted to improve the design, modify performance, or change another feature at a later time.