Big data is a large collection of ordinary data. Big data is a collection of data that cannot be captured, managed and processed with conventional software tools within a certain timeframe, and it is a massive, high-growth and diversified information asset that requires a new processing model to have stronger decision-making, insight discovery and process optimization capabilities.

Nowadays, society is a high-speed development society, advanced technology, information flow, people's communication is getting closer and life is getting more and more convenient, big data is the product of this high-tech era. Alibaba founder Jack Ma mentioned in his speech in Taiwan that the future era will not be the IT era, but the era of DT, DT is Data Technology data technology, showing that big data is pivotal to Alibaba Group.