Lasting peace requires an integrated approach that involves economic, social, political, and security support for countries prone to recurring cycles of violence. Canada was one of the first countries to promote the concept of peacebuilding.

Within the UN system, Canada supported the creation in 2005 of the Peacebuilding Commission, a member-state body mandated to coordinate and provide direction to post-conflict peacebuilding. The Peacebuilding Commission is the UN's principal instrument for sharing peacebuilding experience and applying this knowledge in the field. The Peacebuilding Commission is a useful tool through which Canada can share its own extensive peacebuilding experience in order to inform and improve results in those post-conflict countries where the Peacebuilding Commission is engaged. Canada plays a number of influential roles within the Peacebuilding Commission, as a member of the Organizational Committee, and as chair of the Sierra Leone Country-Specific Configuration. As chair, Canada engages in Security Council debates on thematic and area-specific peacebuilding issues.

Canada helped create the Peacebuilding Support Office, which serves and provides policy guidance to the Peacebuilding Commission. Canada also helped create the United Nations Peacebuilding Fund that is administered by the Peacebuilding Support Office and which provides post-conflict financial assistance at the discretion of the UN Secretary-General.