CMMI certification is a set of quality management and quality assurance standards for software products formulated by the Software Engineering Institute (SEI). It is divided into five levels: initial level, managed level, defined level, quantitative management level and optimization level. It marks the five levels of capability maturity of software enterprises. The higher the level, the higher the maturity of organizations. At present, among all the enterprises that have passed CMMI certification in China, more than 95% of them have level III qualification. There are more than 100 companies that have passed CMMI level 5 in China, most of which are software development companies. Onew is one of them.