I'm looking for a phrase or word that basically means interchangeable with other parts.
I'm working on a proposal in which I'm describing a technical solution that consists of several parts which can be connected to other technical solutions (kind of like a connector set). I think there's a good word for this, but I can't seem to remember what that word is. I almost feel like it's on the tip of my tongue, but I just can't come up with a single word (or concise phrase might do). Thanks.