Technically, scampi is the Italian word for langoustines which are sort of tiny lobsters, it's not actually the name of the sauce. Languoustines are traditionally cooked in a garlic and white wine sauce. Shrimp scampi is a creation of Italian-American immigrants who used shrimp in place of langoustines, but used the traditional preparation, so they kept both words. It also has lots of variations, so feel free to riff on it and add your own touches of herbs or veggies like I've done here.