Goldman Sachs BDC, Inc. functions as a business development company (BDC) with a specific focus on extending capital to privately held, middle-market enterprises, including mezzanine-level investments. Its core objective is to generate capital appreciation, primarily achieved by directly originating various debt instruments. These include both secured debt (such as senior, junior, first lien, first lien/last-out unitranche, and second lien facilities) and unsecured debt, notably mezzanine financing.