deliver the goods

do what is expected or required, provide the promised results; hand over the goods, send the merchandise over

Verb
1. attain success or reach a desired goal; "The enterprise succeeded"; "We succeeded in getting tickets to the show"; "she struggled to overcome her handicap and won"
(synonym) succeed, win, come through, bring home the bacon
(hyponym) hit
(entail) try, seek, attempt, essay, assay

succeed in doing what is expected well He is the best manager that we have ever had. He knows how to deliver the goods.

TENER FEDE A UNA PROMESSA. NON VENIR MENO ALLE ASPETTATIVE. MANTENERE LA PAROLA. FARE QUEL CHE SI DEVE. CONSEGNARE LA MERCE