The Integrity Pact was first introduced in the 1990s and since then has been applied across the world. A revival in 2015, including the implementation of a pilot project across 11 countries in the European Union, enabled a further update of the approach and for further lessons to emerge. These lessons include a better understanding of where the Pact might be applied to best effect as well as lessons on the internal workings of the Integrity Pact. It was on this basis that this guide was developed.