Licensing Reference
Licensing reference materials are continuously updated, highly-detailed entries covering Microsoft licensing terms, procedures, practices and timelines.
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Product Reference
Product reference materials are clear, concise definitions and descriptions of Microsoft's ever-growing catalog of products and services.
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Exchange Online Roadmap
Exchange Online provides e-mail, calendar, and task management to Microsoft 365 users through Outlook desktop,... more
Purview Message Encryption Roadmap
Product: Purview Message Encryption Licensing: Exchange Online Microsoft Purview Message Encryption (formerly Office 365 Message... more
Outlook Roadmap
Outlook is Microsoft’s line of applications for e-mail and for users to manage calendars, contacts,... more
Places Roadmap
Microsoft Places is an Office 365 service that expands the scheduling capabilities of Exchange Online... more
Exchange Online Archiving Roadmap
Roadmap for Exchange Online Archiving, a Microsoft-hosted service that archives user mailboxes from Exchange Online... more
Exchange Online
Exchange Online should receive security improvements in 2024, as Microsoft cleans up from a major... more
Exchange Online Archiving
Exchange Online Archiving is a Microsoft-hosted service that archives mailboxes from Exchange Online or Exchange... more
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Exchange Online Roadmap 2025-2029
Updated: May 15, 2025
Exchange Online should be the default choice for upgrades to current Exchange Server systems Shutdowns...more
Exchange Online to Block Basic Senders in Sept. 2025
May 6, 2025
Exchange Online will block Basic Authentication for SMTP client submission beginning in Sept. 2025. The...more
Directory Ties Cloud Customers to Exchange Server
April 27, 2025
Customers who move all their mailboxes into Exchange Online may still need Exchange servers to...more
Legacy Outlook for Mac Phaseout Starts Oct. 2025
Updated: March 11, 2025
Customers should migrate their Macs off legacy Outlook as soon as possible if they access...more
New Limit on M365 Mail Starts May 2025
Updated: March 6, 2025
Exchange Online will enforce a tenant-level limit on the number of external recipients contacted every...more
Exchange Online Blocks Legacy Senders
Updated: February 24, 2025
The Exchange Online cloud service progressively throttles, then blocks, mail connections with “persistently vulnerable” Exchange...more
Targeting Trouble Spots in New Outlook
Updated: November 26, 2024
New Outlook eliminates some longtime Outlook features and could disrupt some business processes and mail-enabled...more
New Outlook Rollout: Two Scenarios
Updated: July 30, 2024
Microsoft 365 Apps for enterprise customers have at least two years, probably longer, before they...more
Targeting Trouble Spots in the New Outlook
Updated: July 22, 2024
July 17, 2024: Microsoft has announced more detailed plans for new Outlook. See “New Outlook:...more
Places Is Behind Closed Doors, for Now
Updated: May 14, 2024
Update: Places is available in public preview as of May 13, 2024, with general availability...more
Scheduling Darwin Lineup
Updated: April 27, 2024
Several scheduling extensions have come and gone for Exchange and Outlook users. The accompanying chart...more
Microsoft 365 Backup Offers Long-Awaited but Limited Utility
Updated: February 26, 2024
Microsoft 365 Backup, a paid preview service, enables customers to back up and restore data...more
Evaluating Microsoft 365 Collaboration Services
Updated: December 17, 2023
Several Microsoft 365 services allow communication and content sharing between users so they can collaborate....more
Exchange Online Shutdowns Through 2023
Updated: November 28, 2023
Service shutdowns and software support terminations are coming to Exchange Online through the end of...more
Exchange Online Cuts Off Some Clients in Oct. 2020
Updated: November 27, 2023
Exchange Online will cut off basic authentication in the second half of 2021 for many...more
Collaboration Roadmap Update
Updated: November 27, 2023
Microsoft has focused its collaboration offerings around Office 365 Groups. Teams has become the leading...more
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Business Applications Roadmap
