They serve different people.

Big Data, also known as huge data, refers to massive, high-growth and diversified information assets, and needs new processing modes to have stronger decision-making, insight and process optimization capabilities. The concept of "big data" was first put forward by Viktor Mayer-Sch?nberger and Kenneth Cookeye in The Age of Big Data, which means that all data are used for analysis and processing, not random analysis (sampling survey). Big data has 4V characteristics, namely volume, speed, diversity and value.