deliver on (something)
To fulfill an obligation, such as keeping a promise or paying a debt. You better deliver on all the things you said you would do, or the client is not going to be happy. Trust me, I always deliver on my promises to pay my debts, OK?
To do something one has promised or is expected to do: The contractor delivered on his promises to get the work done by Friday. Our office manager delivers on everything she says she will do.