MPLX LP is a master limited partnership that provides midstream energy infrastructure and logistics services, operating crude oil and refined product pipelines, terminal facilities, storage assets, and distribution networks for crude oil, refined products, natural gas liquids, and natural gas. The company derives revenues primarily from long-term service agreements with Marathon Petroleum Corporation—which owns and controls the partnership through its general partner and accounts for a substantial portion of cash flows—as well as from third-party energy companies requiring transportation, storage, terminal, and marketing services. MPLX grows through organic expansion of existing assets and strategic acquisitions designed to expand its infrastructure base and increase cash generation, while distributing substantially all available cash to public and majority-holder unitholders on a quarterly basis.