Microsoft Teams
Microsoft uses this display name for more than one service plan — this one is TEAMS1.
Part of Teams (core / shared channels)
Teams (core / shared channels) Included in 61 licenses
Microsoft 365 Business Basic SMB_BUSINESS_ESSENTIALS
Microsoft 365 Business Basic The entry-level Microsoft 365 plan for small businesses — web and mobile Office apps, Exchange email, Teams, and 1TB of cloud storage per user; capped at 300 seats. O365_BUSINESS_ESSENTIALS
Microsoft 365 Business Standard Adds desktop Office apps (Word, Excel, PowerPoint, Outlook) to Business Basic's web/mobile-only lineup — the mid-tier small-business plan; capped at 300 seats.
Microsoft 365 Business Premium Business Standard plus a slice of enterprise security — Intune device management, Entra ID P1, and Defender for Business — for small businesses that need managed devices; capped at 300 seats.
Microsoft 365
Microsoft 365 E3 Office 365 E3's productivity core plus Windows, Intune device management, and Entra ID — the standard Microsoft 365 Enterprise plan; no seat cap.
Microsoft 365 E5 Microsoft 365 E3 plus the full Defender security suite, Purview compliance stack, and advanced analytics — the top Microsoft 365 Enterprise tier; no seat cap.
Microsoft 365 E7 Microsoft 365 E5 plus additional advanced security add-ons bundled into a single SKU — Microsoft's newest, highest Enterprise tier.
Office 365
Office 365 E1 The entry-level Office 365 Enterprise plan — web and mobile Office apps, Exchange, SharePoint, and Teams; no desktop Office apps and no per-SKU seat cap.
Office 365 E2 retired
Office 365 E3 Adds desktop Office apps and a fuller Exchange/SharePoint/compliance feature set to E1 — the standard mid-tier Enterprise productivity plan; no seat cap.
Office 365 E4 retired
Office 365 E5 Office 365 E3 plus advanced security, compliance, and voice (Teams Phone, Audio Conferencing) — the top Office-only Enterprise tier; no seat cap.
Microsoft 365
Microsoft 365 F1 M365_F1_COMM
Microsoft 365 F1 A frontline-worker plan for staff without an assigned desk — Teams, shift management, and limited Office web apps; no desktop Office apps. M365_F1
Microsoft 365 F3 Office 365 F3 plus Windows, Intune, and Entra ID for frontline devices — the frontline-worker counterpart to Microsoft 365 E3.
Office 365
Office 365 F3 Frontline-worker email and web/mobile Office apps — a lighter, pre-Microsoft-365 predecessor to Microsoft 365 F3.