Mobile Application Management ( MAM) is part of Intune, is to manage some of the apps and data being used or accessed by company users. with MAM policies, your users’ personal apps and data remain their business while company apps and data, your business,remains secure and managed in accordance with company policies.the apps that they need to be productive and Microsoft Intune’s MAM capabilities ensure the equation remains in balance.Microsoft Intune also can be used to install apps on end-user devices either automatically or on demand (managed apps).there’s also another category of app management called MAM-protected apps. MAM-protected apps are managed apps with an additional layer of protection provided by Intune MAM policies.