Short for Web Application Firewall, it’s a security tool designed to protect web applications by monitoring and filtering incoming traffic. Think of it as a digital bodyguard, shielding your site from threats like SQL injection, cross-site scripting, and other malicious attacks. By analyzing HTTP requests, a WAF can block harmful traffic while allowing legitimate users through, keeping your web applications safe and sound. It’s essential for anyone serious about security in the ever-evolving landscape of online threats!