Quadratic funding is a concept that extends ideas from quadratic voting to a funding mechanism. Both concepts were widely discussed by Vitalik Buterin in his blog posts and a paper that he co-authored together with Zoë Hitzig and Glen Weyl.
At the core of Quadratic funding is its matching pool. A matching pool is a pool of money that is provided by the matching partners. Matching partners are companies, individuals or even protocols supporting public goods projects.
The funds collected in the matching pool are used to magnify the individual contributions to different projects.