SAP SE is a German multinational software corporation based in Walldorf, Baden-Württemberg, that develops enterprise software to manage business operations and customer relations. The company is especially known for its ERP software. SAP is the largest non-American software company by revenue as well as the world's third-largest publicly-traded software company. Historical references include Systems, Applications, and Products in Data Processing, SAP AG and SAP SE. SAP is headquartered in Walldorf, Baden-Württemberg, Germany with regional offices in 180 countries.