Who is the online banking software developer in the banking industry?

At present, the four major state-owned banks, industry, agriculture and construction, all rely on their own information technology departments to develop and operate. Small-scale city commercial banks and rural banks are limited by their own strength or cost performance, and basically rely on the professional teams of third-party financial IT enterprises to develop, including daily operating systems and online banking software systems. At present, domestic financial IT enterprises have begun to take shape, including Tonglian Payment, Digital China, Kingdee, Yanlian, etc ... and many teams.