A single-dealer platform (SDP) is software used by an investment bank dealing in the capital markets to deliver trading and associated services via the web. The function of an SDP is to integrate pricing, liquidity, and information from multiple sources within a bank and provide access to them via a single user interface. It is thus both an integration platform and a delivery platform. Although in principle SDPs are applicable to all types of tradable security, they have so far been most widely used in OTC markets such as foreign exchange and fixed income.