No, a Web Application Firewall (WAF) is not a perimeter firewall, although it can be deployed with one. A WAF is a specialized security solution designed to protect web applications and APIs from various types of attacks, such as SQL injection, cross-site scripting (XSS), and other application-level vulnerabilities. While a perimeter firewall operates at the network level, inspecting and filtering network traffic based on predefined rules, a WAF operates at the application level, analyzing and filtering HTTP/HTTPS traffic to and from web applications. WAFs are often deployed as an additional layer of security, complementing the perimeter firewall and providing specialized protection for web-based assets.