Crowdfunding is the practice of funding a project or venture by raising monetary contributions from a large number of people. Crowdfunding is a form of crowdsourcing and of alternative finance. In 2015, it was estimated that worldwide over US$34 billion was raised this way. Although the concept can also be executed through mail-order subscriptions, benefit events, and other methods, it is now often performed via Internet-mediated registries. This modern crowdfunding model is generally based on three types of actors: the project initiator who proposes the idea and/or project to be funded, individuals or groups who support the idea, and a moderating organization (the “platform”) that brings the parties together to launch the idea.
Crowdfunding has been used to fund a wide range for-profit entrepreneurial ventures such as artistic and creative projects, medical expenses, travel, or community-oriented social entrepreneurship projects.
Source: WikiPedia