Crowdsourcing is a process through which a task, problem or project is solved and completed through a group of unofficial and geographically dispersed participants.
Crowdsourcing is a joint process development or problem-solving technique that requires help from a network of people, or crowd. This network is usually connected via the Internet or through a specific website.
Techopedia explains Crowdsourcing
Crowdsourcing generally is an outsourcing technique that employs freelance, volunteer and paid human resources to complete a particular task. Crowdsourced labor often works remotely.
Crowdsourcing works when a business or individual, also known as crowdsourcer, advertises a problem or project on a related website and invites subject matter experts and the general public, known as the crowd, to propose a solution or participate in finishing the task. The participating members are paid remunerations or are complemented with recognition once the problem is solved or the task is completed.