The document discusses how Zscaler and Microsoft Cloud App Security (MCAS) can enhance cloud application security and network visibility amidst the increasing reliance on cloud services by organizations. It highlights the need for a new security model that secures user access to applications directly via the internet, addressing existing challenges like bandwidth issues and shadow IT. Additionally, it outlines specific use cases for integrating Zscaler with MCAS to manage sanctioned, permitted, and restricted cloud applications while ensuring compliance and data protection.