A model in which individuals and organisations obtain goods and services (ideas, money) from a large relatively open and often rapidly evolving group of internet users. It divides work between participants to achieve cumulative result. The term was coined 2006 (crowd plus sourcing), although it existed as a model before digital age. Source: https://en.wikipedia.org/wiki/Crowdsourcing

Dividing the work of collecting a substantial amount of data into small tasks that can be undertaken by volunteers.

Source: ODH