This step-by-step guide to improving service delivery is the second in the series of SPARC How to guides. SPARC designed the series of How to guides to help executives, directors and managers in Nigerian federal and state public services to build and operate services more strategically and more effectively. This guide describes the overall approach to improving service delivery, an approach tested in SPARC-supported states. The guide captures some of the key lessons learned between 2010 and 2014.