I really don’t think there’s any one answer here.
S.T.A.R. Labs is DC’s go to science place that can show up in any book as needed, features in various origin stories, and where any number of obscure characters can be said to have worked or be working.
Marvel kind of has that spread out over various agencies and companies; just wanting to see if how many are out there I may not have heard of.
I remember Project Pegasus was a lot like S.T.A.R. Labs back in the day (they were really important in the Marvel Two in One book)…
…but you dont really hear much from them any more.