The Integrated Nuclear Infrastructure Review (INIR) service, launched by the IAEA in 2009, was designed to support the evaluation of the infrastructure for the introduction of a nuclear power programme. An INIR mission is conducted upon Member States request and it enables countries to identify areas of infrastructure development where further attention is needed. The INIR mission also identifies good practices to be shared with other Member States. In addition, it provides an opportunity for the exchange of information between local experts and a team of IAEA and international experts on their experiences. This publication is intended to provide information and analysis on the main results of INIR missions and to share lessons learned. The publication also explains the recent developments in the INIR process and the mechanisms to support Member States after an INIR mission is conducted.