Effective business management within organizations depends, among other factors, on the availability and proper management of appropriate resources. Information resources are one of those resources. This chapter offers practical answers to the many questions that information professionals in an institution may have about how to ensure performing secure and rational management for corporate informational assets. After a brief presentation and discussion of main concepts, it defines and describes the information governance policy, which is the key tool of an advanced information governance approach. It specifies how and when a maturity model should help to develop and update a corporate information governance policy. In addition, it presents the main practical guidelines including specific recommendations on the structure, content, and format of an information governance policy. A discussion of the development and implementation process is then proposed.