Patreon is a membership platform that allows creators to receive funding directly from their fans or patrons on a recurring basis. Creators can offer exclusive content, early access, and other perks in exchange for monthly support. The "Rad Lord" creator, offering this "Hazelnut Latte v0124" design, likely uses Patreon as a means to monetize their digital art, providing supporters with access to high-quality designs, possibly including this particular hazelnut latte-themed artwork.