Microsoft has announced that the Web Application Firewall (WAF) bot protection feature has reached general availability on Azure Application Gateway starting this week. Bad bots blocked using this new managed bot protection rule set can be used by threat actors for various resource-consuming or malicious tasks such as scraping, scanning, and looking for vulnerabilities in web applications. Azure WAF can be deployed in a single click within minutes with Application Gateway, Azure Front Door, and Azure Content Delivery Network (CDN) service from Microsoft.
Source: https://www.bleepingcomputer.com/news/security/bot-protection-now-generally-available-in-azure-web-application-firewall/