Mobile money continues to evolve as a service contributing to economic empowerment and poverty alleviation in developing nations. From saving a consumer travel time from rural areas to urban banks to helping a consumer avoid paying costly money transfers, mobile money serves as a fast and efficient way to transfer money. Perhaps most importantly for developing countries, it extends financial services to citizens who might not ordinarily have access to banking services or participate fully in the formal economy. Despite its numerous advantages, there are many barriers to the development and deployment of mobile money services including limitations imposed by the financial sector as well as privacy and security risks. This chapter provides case studies, an overview of the challenges and best practice guidelines for overcoming regulatory and technical barriers to the development and deployment of mobile money services.