SharePoint Server 2019 provides a modern experience on-premises with features aligned with Office 365. It allows for modern team sites, lists, libraries and a simplified sharing experience. The user interface is also updated to match Office 365 with the suite navigation and app launcher. It further provides improved search, mobile access with the SharePoint mobile app, and integration with OneDrive. For IT administrators, it offers simplified site creation and management along with increased file limits and SMTP server authentication for outgoing emails.