What is Microsoft To-Do Preview and how does it work?
Microsoft To-Do Preview is a simple and intelligent to-do list app that empowers users to keep track of and focus on the things they need to get done. Since To-Do Preview uses the Outlook Tasks API to securely sync and store to-dos, your data lives in Exchange and automatically integrates with Outlook Tasks. With native support for organization accounts in tenants with Azure Active Directory, To-Do Preview apps support secure login scenarios such as Two-Factor Authentication and a toggle in the O365 admin center for allowing or disallowing organizational access to To-Do Preview apps.
Use of To-Do Preview apps with a work account is subject to a few conditions including preview terms, licensing, organization preferences and pre-requisites. To find specific information on each of those conditions and what to do should the apps provide you or the users you support with an error related to them, please read the following related help articles: