You need to configure GitHub to use Azure Active Directory (Azure AD) for authentication. What should you do first?

To integrate GitHub with Azure AD for authentication, the first step is to register GitHub as an application in Azure AD. This process creates an application object in Azure AD that represents GitHub, allowing Azure AD to manage its identity and access. Without this registration, Azure AD cannot recognize GitHub as a service it needs to authenticate users for. Creating a conditional access policy in Azure AD is a subsequent step for enforcing specific access rules, not the initial setup. Creating an Azure AD B2C tenant is for customer-facing applications, not for integrating an enterprise service like GitHub with an existing Azure AD. Modifying GitHub organization security settings comes after Azure AD integration is established, to configure GitHub to use the newly integrated Azure AD for authentication.