complementary products
noun[plural]
ukus(alsocomplementary goods)MARKETING
productsthat aresoldseparatelybut that are used together, eachcreatingademandfor the other, forexample,computersandcomputerprograms:
Technologyfirmsthatspecializein oneproductnowjoinforceswith othercompaniesthatfocusoncomplementaryproductsorservices.