Azure DDoS Protection Plan is a service provided by Microsoft Azure to protect customers from Distributed Denial of Service (DDoS) attacks. With this service, customers can ensure that their applications and resources in Azure are protected against DDoS attacks of different types and sizes. The service provides an always-on monitoring and mitigation system that can detect and mitigate DDoS attacks in real-time, without any manual intervention from the customer. The Azure DDoS Protection Plan includes features such as network flow monitoring, traffic analysis, and advanced analytics to identify potential threats before they can cause damage. Additionally, the service can be easily integrated with other Azure services, making it a seamless addition to any Azure deployment. Overall, the Azure DDoS Protection Plan is an essential component of any security strategy for businesses that rely on Azure to deliver their applications and services.