Definitions of sponsorship

the act of contributing money towards, or to pay for, a project or other activity

AT&T chose not to continue its sponsorship of the game.

the act of introducing and supporting a proposed new law in a legislative assembly

She formally withdrew her co-sponsorship of the bill after raising her objections with House leaders.

the act of recommending, organizing, and promoting talks or negotiations between people or groups

Qatar's biggest diplomatic success was its sponsorship of negotiations in Doha that ended the violence.