Microsoft Graph is an API platform that helps developers create apps capable of accessing Microsoft 365, Windows 10, and Enterprise Mobility + Security data. New Microsoft Graph APIs released today in public preview allow developers and IT professionals to manage Windows 10 updates and expedite Windows 10 security updates in enterprise environments. Customers with supported Windows or Microsoft 365 subscriptions can access the deployment services through the new APIs starting today. To start using the new Microsoft Graph API today, you need one of the following subscriptions: Windows 10 Enterprise E3 or E5 (included in Microsoft 365 F3, E3, or E-5)
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-new-apis-for-managing-windows-update/