The acronym WAF stands for Web Application Firewall. WAFs are security solutions designed to monitor and filter HTTP traffic between web applications and users. They help protect applications from various threats, such as SQL injection, cross-site scripting (XSS), and other vulnerabilities. By analyzing and filtering incoming requests, WAFs can detect and block malicious traffic, enhancing the overall security of web applications. Deploying a WAF is critical for organizations seeking to safeguard sensitive data and maintain regulatory compliance.