Aplicaciones y Tratamientos de Sistemas SA is a consulting, information technology services, and software development company, which engages in the digital transformation business. It operates under the Software and Solutions Re-Selling and Information Technology (IT) Services segments. The Software and Solutions Re-Selling segment offers cloud-based infrastructure outsourcing services and productivity, business, infrastructure, and system software. The IT Services segment includes developing and maintaining customized applications, infrastructure and IT systems; integration of third-party products, solutions, and platforms; and providing professional digital marketing, IT consulting, and advisory services. The company was founded by José María López Galizia on March 1, 1994 and is headquartered in Las Rozas, Spain.