revenue model
means for businesses to generate revenues
subscription business model
recurring payment at regular intervals for access to a product
gift giving
bestowing of tangible or intangible benefits, voluntarily and usually without expectation of anything in return
incentive program
activities to support projects with cash or other goods
philanthropy
effort or inclination to increase the well-being of humankind by getting to the root of a problem and solving it once and for all via charitable aid or donations
subsidy
financial support to an economic sector