Automate Azure App Secret Rotation with ESC

Microsoft Entra ID, formerly known as Azure Active Directory, is a critical component of Azure's identity and access management service, necessitating secure app registration and client secret management. App registrations require client secrets for authentication, which can lead to potential outages if not regularly rotated before expiration. Pulumi ESC's azure-app-secret rotator offers a solution by automating the rotation of these secrets, ensuring continuous access and mitigating the risk of expired credentials. To implement the rotator, certain prerequisites such as Azure App Registration and specific permissions must be met, and a rotation schedule should be established to maintain security. The rotator supports a seamless transition between secrets by maintaining both a current and previous secret to avoid downtime, with a recommended secret lifetime of less than 730 days to enhance security. This automation simplifies credential management and ensures that the latest credentials are always available in the ESC Environment.