Software Engineering Institute (SEI) is a research and development center at Carnegie Mellon University (CMU). The SEI helps the government, businesses, and other organizations develop better software and systems. They do this by coming up with new ways to create and maintain software that is more efficient, secure and reliable. They also train people on how to use software and systems in a safe, secure and effective manner. All of this research and development leads to better software and systems for everyone.