The document summarizes experiences from the African Forum for Agricultural Advisory Services (AFAAS). It discusses how agricultural extension and advisory services (AEAS) in Africa have evolved from a traditional focus on technology transfer to facilitating innovation systems and supporting farmers' organizations. It outlines challenges faced by national AEAS and reforms underway, such as decentralization and pluralism. The document also reviews evidence that extension can significantly and positively impact knowledge, adoption and productivity when effective policies support well-organized extension systems. Finally, it provides examples of AFAAS's work strengthening country forums and networks and building partnerships around advisory services in Africa.