The vision behind annex SL (renamed in 2019 as Annex-L) is a new management system format that helps streamline creation of new standards, and makes implementing multiple standards within one organization easier. It replaces ISO’s guide 83, which provided a base structure and standardized test for management system standards (MSS).
Harmonization allows companies to understand the minimum regulatory and customer requirements of international markets. This in turn allows companies to produce goods for those markets. There are a number of public, private, and government-to-government organizations that are involved in harmonization of standards.