Microsoft 365
Licensing, migration and managed support
Exchange Server 2016/2019 and Windows 10 went out of support on 14 October 2025. SharePoint Server 2016/2019 followed on 14 July 2026. Office 2021 and Office LTSC 2021 reach end of support on 13 October 2026, and Windows Server 2016 on 12 January 2027. Each date is a decision about where that workload runs next, and each one has a Microsoft 365 answer. The work is choosing the right plan and moving without breaking the business.
Seven plans, one right answer for your seat count.
Business Basic
Web and mobile Office, Teams, Exchange and SharePoint. Up to 300 seats.
Business Standard with Copilot
Desktop Office plus Copilot in Word, Excel, Outlook and Teams.
Business Premium with Copilot
Adds Entra ID P1, Intune Plan 1, Defender for Business and Purview.
Microsoft 365 E3
No seat ceiling. The enterprise identity, device and compliance base.
Microsoft 365 E5
Adds the full Defender and Purview stack, including DSPM for AI.
Microsoft 365 E7
Everything in E5 plus Microsoft 365 Copilot, Agent 365 and the Entra Suite. Live May 2026, no seat ceiling.
Microsoft 365 F3
Frontline and shift workers who do not sit at a desk.
Assess, move, and stay running.
Assess
We inventory tenants, mailboxes, servers and assigned licences against what is actually in use, then price the options side by side.
Done looks like: One table showing current spend, correct spend and the gap.
Move
Migration of mail, files and identity, with a security baseline configured as we go rather than bolted on afterwards.
Done looks like: Users working, MFA and Conditional Access enforced, old servers decommissioned.
Run
Managed application and technology services with L1, L2 and L3 support, patching, monitoring and a named service owner.
Done looks like: A monthly report, a service desk that answers, and no surprise renewals.
The 300-seat ceiling is enforced
Microsoft caps the Business family at 300 provisioned seats across Basic, Standard and Premium combined, and states that it reserves the right to enforce that limit. An organization sitting at 250 Business Premium seats has 50 left across the whole family. Growing past it is an E3 or E5 conversation, and it costs less to plan it than to hit it.
Talk to AIM about Microsoft 365.
Bring your current environment and we’ll walk through where AIM’s CSP program changes the licensing, the architecture, or both.