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Use Office 365 PowerShell. For more information, see Assign Microsoft 365 licenses to user accounts with PowerShell. If you have a subscription for Azure AD Premium P1 and above, or an edition of Office 365 Enterprise E3 or Office 365 A3 or Office 365 GCC G3 and above, you can use group-based licensing with Azure AD. Microsoft Office is the most well-known software suite for productivity. For a fairly low monthly subscription fee, Microsoft 365 offers its software bundled together with access to the cloud. Enter username@domain and your password to login. (Staff: username@houstonisd.org and Students: username@online.houstonisd.org) For login problems, please contact the service desk at 713-892-7378. Microsoft 365 has all the familiar Office apps and more in one place. Work, learn, collaborate, connect, and create with Microsoft 365.

Microsoft 365 and Office 365 are available in a variety of plans to best meet the needs of your organization.

Service families and plans

The following table lists the different service families and plans available in Microsoft 365 and Office 365. For a high-level overview of features and pricing information, or to chat with an online representative, select any of the links in the Plans column.

Office
Office 365 service familyPlans
Business (maximum of 300 users)
Microsoft 365 Business Basic (formerly Office 365 Business Essentials)
Microsoft 365 Business Standard (formerly Office 365 Business Premium)
Microsoft 365 Business Premium (formerly Microsoft 365 Business)
Microsoft 365 Apps for business (formerly Office 365 Business)
Enterprise (unlimited number of users)
Office 365 E1
Office 365 E3
Office 365 E5
Office 365 F3
Microsoft 365 F1
Microsoft 365 F3 (includes Office 365 F3)
Microsoft 365 E3 (includes Office 365 E3)
Microsoft 365 E5 (includes Office 365 E5)
Microsoft 365 Apps for enterprise (formerly Office 365 ProPlus)
Education (unlimited number of users)
Office 365 A1
Office 365 A3
Office 365 E5
Microsoft 365 A1 (one-time, per device license paired with free Office 365 A1 per user licenses)
Microsoft 365 A3 (includes Office 365 A3)
Microsoft 365 A5 (includes Office 365 A5)
U.S. Government (unlimited number of users)
See all available plans
Office 365 operated by 21Vianet in China
See all available plans
Office 365 Germany
Learn about Office 365 Germany

Service availability within each Microsoft 365 and Office 365 plan

Each Microsoft 365 or Office 365 plan includes a number of individual services, such as Exchange Online and SharePoint Online. The following table shows the services that are available in each plan.

Important

While a service may be available across Microsoft 365 and Office 365 plans, the features available in each plan may differ. To see the details of features that are available for each plan, refer to the individual service description or contact your Reseller or Microsoft sales representative for more information.
Several of the Microsoft 365 and Office 365 plans have add-ons that you can buy for your subscription. An add-on provides additional functionality to the subscription. For more information, see Buy or edit an add-on for Office 365 for business.

365 Office 365

ServiceMicrosoft 365 AppsMicrosoft 365 Business BasicMicrosoft 365 Business StandardMicrosoft 365 Business PremiumOffice 365 E1Microsoft 365 E3/Office 365 E3Microsoft 365 E5/Office 365 E53,15Microsoft 365 F3/Office 365 F3Microsoft 365 F1
Office 365 platform
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Exchange Online
No
Yes5
Yes5
Yes5
Yes5
Yes6
Yes6
Yes8
No16
SharePoint Online
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes17
OneDrive
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes4
Yes4
Skype for Business Online 14
No
Yes9
Yes9
Yes9
Yes9
Yes10
Yes12
Yes13
Yes13
Office for the web
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No18
Office applications
Yes
No
Yes
Yes
No
Yes
Yes
No
No
Project
No
No
No
No
No
No
No
No
No
Power BI
No
No
No
No
No
No
Yes
No
No
Yammer Enterprise
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Azure Information Protection2
No
No1
No1
Yes
No1
Yes
Yes
No1
No
Microsoft Kaizala
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No

1 Azure Information Protection is not included, but can be purchased as a separate add-on and will enable the supported Information Rights Management (IRM) features. Some Azure Information Protection features require a subscription to Microsoft 365 Apps for enterprise, which is not included with Microsoft 365 Business Basic, Microsoft 365 Business Standard, Microsoft 365 F1, Microsoft 365 F3, Office 365 E1, Office 365 A1, or Office 365 F3.
2 To learn more about which Azure Information Protection features are included with Microsoft 365 and Office 365 plans, see Azure Information Protection.
3 Office 365 E5 and Microsoft 365 E5 contain Phone System and Audio Conferencing. To implement a Calling Plan requires an additional plan purchase (either Domestic or International).
4 Includes 2 GB storage.
5 Includes Exchange Online Plan 1.
6 Includes Exchange Online Plan 2.
7 Includes Exchange Online Plan 1 plus supplemental features.
8 Includes Exchange Online Kiosk.
9 Includes Skype for Business Online Plan 2 with basic client limitations.
10 Includes Skype for Business Online Plan 2 without any client limitations.
11 Includes Skype for Business Online Plan 1 plus supplemental features.
12 Includes Skype for Business Online Plan 2 with voice support and without any client limitations.
13 Includes Skype for Business Online Plan 1.
14 Microsoft Teams is now the primary client for messaging, meetings, and calling in Microsoft 365. As of Oct. 1, 2018, new customers with 500 seats or less are onboarded to Microsoft Teams and do not have access to Skype for Business Online. Tenants that are already using Skype for Business Online are able to continue doing so (including provisioning new users) until they complete their transition to Microsoft Teams.
15 Includes Microsoft 365 E5 Compliance, which provides automatic classification and retention, Customer Key, Advanced Message Encryption, Insider Risk Management, Communication Compliance, Information Barriers, Customer Lockbox, Privileged Access Management, Advanced Audit, Records Management, and Advanced eDiscovery capabilities; and Microsoft 365 E5 Security, which includes Microsoft Defender for Office 365 Plan 2, Microsoft Defender for Endpoint, Azure Active Directory Plan 2, Microsoft Defender for Identity, Microsoft Cloud App Security, and Safe Documents.
16 Microsoft 365 F1 does not include rights to an Exchange mailbox. To enable a full Teams experience, M365 F1 licenses may come with the Exchange Online K1 service plan enabled. Although the Exchange Online K1 service plan will provision a mailbox for the user, M365 F1 users are not entitled to use the mailbox. We recommend that your customers disable Outlook on the web via these steps and ask users not to access the Exchange mailbox via any other methods.
17 Includes SharePoint Online Kiosk. Cannot be administrators. No site mailbox. No personal site.
18 Microsoft 365 F1 users can read files using Office for the web, but do not have create/edit/save rights.

Basic client limitations

Proplus

The following features are available in the full client, but are not available in the basic client:

  • Manage team call settings
  • Manage delegates
  • Make calls on behalf of another contact (manager/delegate scenario)
  • Handle another's calls if configured as a delegate
  • Manage a high volume of calls
  • Initiate a call to a Response Group
  • Call park
  • Group call pickup

Changing or mixing plans

As the needs of your organization change, you may need to change your Microsoft 365 plan. You can switch from your current subscription to another subscription:

  • In the same service family: For example, you can move from Microsoft 365 Business Basic to Microsoft 365 Business Standard, or from Office 365 E1 to Office 365 E3.
  • From a standalone plan: For example, you can move from Exchange Online Plan 1 to Office 365 E1.
  • To a different service family: For example, you can move from Microsoft 365 Business Basic to Office 365 E3.
    For information about how to change subscriptions, including how to move from a trial to a paid subscription, see Switch to a different Microsoft 365 plan or subscription.

You can combine Enterprise, Business, and standalone plans (for example, Exchange Online Plan 1) within a single account. However, existing limitations on the number of seats per plan do not change. For example, you can have up to 300 seats per plan on both Microsoft 365 Business Basic and Microsoft 365 Business Standard, but an unlimited number of users on Exchange Online Plan 1.

Standalone services

365 Office 365 Download

365

365 Office 365 Outlook Email

The following online services are available on their own, as standalone plans. They can also be added to Business and Enterprise service family plans that don't already include them. For pricing information, or to chat with an online representative, select any of the plans listed in the following table.

Microsoft 365 - Office 365 Proplus

ServicePlans
Exchange Online
Exchange Online Plan 1
Exchange Online Plan 2
Exchange Online Protection
Microsoft Defender for Office 365
Exchange Online Archiving
Exchange Online Kiosk
SharePoint Online
SharePoint Online Plan 1
SharePoint Online Plan 2
OneDrive for Business
OneDrive for Business Plan 1
OneDrive for Business Plan 2
Office applications
Microsoft 365 Apps for enterprise
Microsoft 365 Apps for business
Project portfolio management
Project Plan 1
Project Plan 3
Project Plan 5
Yammer
Yammer Basic
Organizational insights
Workplace Analytics
Business intelligence service
Power BI
Online diagram software
Visio Plan 1
Visio Plan 2
Information Rights Management
Azure Information Protection

Office 365 Office 365

Feature availability

365 Office 365 Log In Portal

To view feature availability across Microsoft 365 and Office 365 plans, see Microsoft 365 and Office 365 platform service description.