Microsoft

Microsoft Internet Information Services (IIS) is a web server platform for hosting websites, web applications, and web services on Windows Server. IIS access logs record detailed information about every HTTP request received, including client IP, requested URL, HTTP method, response code, user agent, and processing time. 

IIS logs are essential for web application security monitoring, enabling detection of web attacks including SQL injection attempts, directory traversal, brute force authentication attacks, and web shell access. They provide forensic evidence for investigating web-based compromises and support identification of vulnerability exploitation, suspicious user agents, and anomalous access patterns.