Why we create app in Azure Active Directory

There are several reasons why you might want to create an app in Azure Active Directory (Azure AD):

• Integrating your application with Azure AD allows you to take advantage of the Azure AD platform, including features such as single sign-on (SSO), multi-factor authentication (MFA), and access management.
• Creating an app in Azure AD allows you to manage the permissions that your app has to access other resources in the organization. This helps you to secure your application and protect your organization's data.
• By integrating your application with Azure AD, you can easily manage the users who have access to your application. This includes adding and removing users, as well as assigning them to different security groups and roles.
• Integrating your application with Azure AD can also make it easier to manage your application's authentication and authorization. This can help you to simplify the process of managing your application's security and access controls.
• Creating an app in Azure AD can also make it easier to manage your application's integration with other Azure services, such as Azure Storage, Azure Functions, and Azure DevOps.

These can be the benefits of creating users in Azure AD

There are several benefits to creating an application in Azure Active Directory (Azure AD):

• Single sign-on (SSO): Integrating your application with Azure AD allows users to sign in to your application using their Azure AD credentials. This makes it easier for users to access your application, as they only need to remember one set of login credentials.
• Multi-factor authentication (MFA): Azure AD supports MFA, which can help to improve the security of your application. By requiring users to provide additional verification, such as a code sent to their phone or a biometric scan, you can help to prevent unauthorized access to your application.
• Access management: Azure AD provides robust access management capabilities, allowing you to control who has access to your application and what they can do within the application. You can create security groups, assign roles, and set permissions to fine-tune access to your application.
• Integration with other Azure services: By creating an application in Azure AD, you can easily integrate your application with other Azure services, such as Azure Storage, Azure Functions, and Azure DevOps. This can help you to build more powerful and feature-rich applications.
• Improved security: Integrating your application with Azure AD can help to improve the security of your application and protect your organization's data. You can use Azure AD's access management features to control who has access to your application, and you can use MFA to help prevent unauthorized access.

Here you can find an article for the registration of an App in Azure Active Directory for Dynamics 365 CE Online.