Secure your tenant with Entra Apps and App Registrations

Why Enterprise Applications and App Registrations are critical for the security of your tenant.

Description

This course contains the use of artificial intelligence.

In this course, you’ll be introduced to the fundamentals of App Registrations and Enterprise Applications in Microsoft Entra ID, and why they matter in a Microsoft 365 environment. You’ll learn what these components are, how they relate to each other, and the role they play when an application needs to authenticate, request permissions, or access Microsoft 365 resources within a tenant.

Throughout the course, you’ll build a clear understanding of the difference between an application as it is defined in Entra ID and the local representation of that application inside a tenant. You’ll also explore important concepts such as single-tenant and multi-tenant applications, service principals, and the identity objects that allow apps to interact with Microsoft services.

As the course progresses, you’ll also explore the security importance of these application identities within a Microsoft 365 environment. You’ll examine how misconfigurations, excessive permissions, exposed credentials, risky consent flows, inactive applications, insecure redirect URIs, and compromised third-party integrations can introduce serious security risks if they are not properly managed.

You’ll learn why App Registrations and Enterprise Applications represent a critical attack surface in Entra ID, and how threat actors can abuse them to gain persistence, escalate privileges, access sensitive data, or move across environments while appearing as legitimate applications. You’ll also explore why visibility, governance, regular reviews, monitoring, secure credential management, and least-privilege practices are essential to reducing these risks.

This course is designed to help you build both a solid conceptual foundation and a stronger security awareness before moving into more advanced topics. By understanding how App Registrations and Enterprise Applications work, and why they can become high-impact security risks when left unmanaged, you’ll be better prepared to recognize their attack surface and the importance of applying best practices to protect your Microsoft 365 environment.

Whether you are a Microsoft 365 administrator, security professional, IT operator, beginner learner, or simply curious about how application identities work in Entra ID, this course will help you develop the core knowledge needed to approach the topic with more confidence.

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