Data application is the key element of data technology (DT) era
the difference between DT and information technology (IT) is whether data is the key product element. IT suppose to solve the “process” problem to make business more effective
but DT suppose to solve the “cognitive” and “collaborative” intelligence to make business to renewable and creative. The catalog of data application product was given. A general architecture of data application platform and organization was proposed. The key and difficult point of data sharing and exchange were analyzed.