Your employees already use a Microsoft work account all day. Then they open an internal application and need another password. Someone has to create that account, reset it when the password is forgotten, and remember to remove it when the employee leaves.
Microsoft Entra ID integration lets a business application use your organization's identity service for sign-in. Single sign-on, or SSO, can reduce those separate logins and bring application access under more consistent management. Entra ID was previously called Azure Active Directory, so older software and vendor instructions may still use that name.
The work involves more than adding a Microsoft sign-in button. You need to decide who can enter the application, what each person can do, how existing accounts connect to their work identities, and how access ends. Those decisions determine whether SSO makes the application easier to run.
What Microsoft Entra ID single sign-on changes
With a typical SSO integration, the application sends the person to Microsoft to sign in. Microsoft verifies their identity and returns a response the application can validate. The application then establishes its own session and applies its access rules.
If the person already has a suitable Microsoft sign-in session, they may enter without typing another password. Your policies can still require another check, such as multifactor authentication. Single sign-on does not mean someone should never be challenged again.
This can remove the need for a separate application password. It also gives administrators a place to manage sign-in policies and investigate sign-in failures. The application still needs its own permissions, business records, audit history, and support arrangements.
Start with the people who need access
Consider a hypothetical equipment service company with a custom job-management application. Dispatchers assign work, technicians update assigned jobs, and managers review activity across the company. All three groups use Microsoft work accounts.
The first question is which of those employees should be allowed into this application. A valid account in the company directory is not, by itself, a reason to grant access to every internal system. Agree on the required assignment rules and what an unassigned person should see.
Then consider contractors and customers. A contractor invited into your directory has different needs from a customer signing in through their own organization. An employee application restricted to one Microsoft tenant is a different scope from a product that accepts accounts from many companies. A tenant is the organization's directory and identity boundary.
Choose those boundaries before development. For a customer-facing application, our client portal development guide covers the wider decisions around customer accounts and access to business records.
Check how the application supports SSO
For a purchased application, first check its supported sign-in methods and your subscription. The vendor may already provide an Entra integration. Confirm whether that feature is included, whether it supports the users you need, and whether account provisioning is part of the same offering.
For a custom application, an engineer should examine the framework, current sign-in code, hosting environment, and access to the source. OpenID Connect is a common choice for modern applications. SAML is also widely used, particularly in established enterprise software. Use the method the application and its supported libraries can handle properly.
An older application might require code changes, a vendor-supported extension, or a different access approach. Adding its URL to an application launcher only creates a convenient link. It does not make the application trust Microsoft identities or retire its separate password.
If the application is already due for broader work, our .NET Framework modernization guide explains how to review dependencies and plan changes without assuming a complete rebuild is necessary.
Keep sign-in and application permissions separate
In the service company, a technician and a dispatcher can both sign in successfully. That should not give them identical access. A technician might see only assigned jobs, while a dispatcher can allocate work across a branch.
Entra app roles can provide categories such as Technician, Dispatcher, and Manager. Directory groups may help administrators assign those roles. The application must interpret the assigned role and enforce the relevant rules. Record-level decisions, such as which branch or customer a person can access, may still belong in the application's own data.
Check permissions on the server for each protected operation. Hiding a management button does not prevent someone from requesting the same action through an API or a copied link. Include exports, searches, and background actions in the review, since those can expose information beyond the screen someone normally uses.
Keep the initial permission model understandable. Three well-defined roles and clear record boundaries are easier to administer than dozens of overlapping exceptions whose purpose nobody remembers.
Connect existing accounts without losing their history
An existing application may already associate each employee with years of work. The SSO rollout needs a reviewed mapping from those accounts to their Microsoft identities so that job history and responsibility remain intact.
Use an appropriate stable identifier for the integration. For Entra work accounts, that commonly includes the directory's tenant ID and the user's object ID. An email address can change, and a display name is not unique. Neither makes a sound permanent identity key on its own.
Review duplicate accounts, shared logins, renamed employees, and people who have left. An account with a matching email address should not silently inherit sensitive access without a deliberate linking process. Test the mapping with representative users before allowing the wider team to sign in.
Background imports and scheduled jobs need a separate review. A job that currently runs under an employee's credentials will not automatically become a suitable unattended integration when that employee switches to SSO.
Plan account creation and removal alongside sign-in
Single sign-on and user provisioning solve different parts of the problem. SSO verifies the person signing in. Provisioning creates and maintains the application's user record and, where supported, disables it when access is removed.
Some applications create a local record on the first approved sign-in. Others need an administrator to prepare the account or use an automated provisioning connection, often through SCIM. Decide how the person receives a role and a branch assignment before they start work. Successful sign-in should not leave a new technician with unexplained errors or excessive permissions.
Test what happens when an employee changes roles or leaves. Blocking their Microsoft account prevents new authentication, but an application may continue accepting its own existing session. The time until access ends depends on session handling, token behavior, and any provisioning connection.
Define the required removal process for this application and verify it with an account that is already signed in. Include outstanding sessions and any remaining local password route. Preserve the person's work history while removing their ability to use the system.
Agree on security policies, licensing, and ownership
Work with the organization's Microsoft administrator on multifactor authentication and any Conditional Access requirements. Policies can depend on factors such as the application, device, and location. Available controls and licensing vary, so confirm the actual tenant and vendor subscriptions before promising a particular setup.
For a custom integration, app registrations hold the application's identity configuration. Enterprise applications represent the application's presence in a tenant and support administration of access there. Name an owner for the relevant configuration, assignments, and sign-in troubleshooting.
Keep development and production settings distinct. Review redirect addresses, requested permissions, and any secrets or certificates the chosen architecture requires. Sign-in alone should not require broad access to everyone's email or files. Any additional API access needs a separate business reason and review.
Also assign responsibility for credential renewal where applicable. A working login can fail later because a certificate expires or a production address changes. The support team needs to know which configuration to inspect and who can change it.
Test more than the successful login
Start with a small pilot covering the roles and devices people actually use. For the service company, that means a dispatcher at a desk, a technician on a phone, and a manager opening a saved link to a report.
Try an assigned user, an unassigned employee, the wrong Microsoft account, an expired session, and a person whose role has changed. Verify that an employee who signs in successfully still cannot read another branch's restricted records. Check sign-out on a shared device and the route back into the application afterward.
Include access removal during an active session and a failure of the identity service. The application should give people a useful explanation and a support route. Agree on a controlled recovery process before retiring the old login method.
Our QA and test automation service can help verify these access rules and preserve them as the application changes.
What should an Entra ID integration project include?
A useful scope names the application, permitted users and tenants, supported sign-in method, account mapping, permission rules, provisioning approach, and access-removal behavior. It should also cover environments, administrator responsibilities, pilot testing, rollout, and support.
The effort depends heavily on what the application already supports. Configuring a vendor's supported SSO connection can be a smaller job than replacing a custom login system with years of account history. Multiple customer organizations, complex permissions, and unattended integrations add further work.
Honor Tech can help assess an existing application and implement the application changes needed for Microsoft Entra ID integration. Our systems integration service covers connections between platforms, while web application development covers changes to the application's sign-in and access behavior.
Bring the application's name, the people who need access, your current Microsoft setup, and a description of today's login process. Tell us which application needs single sign-on, and we can help define the work around the way your team uses it.