What is a security-related purpose of a web proxy server?

A web proxy server acts as an intermediary between user systems and the internet. From a security perspective, this allows the organization to inspect, filter, log, and control web requests before they reach external destinations. A proxy can enforce acceptable use policies, block malicious or prohibited websites, apply authentication, inspect content, and reduce direct exposure between internal clients and external servers. Load balancing distributes traffic across servers but is not the core security purpose of a web proxy. Updating host licensing is unrelated. Caching may improve performance, but the question asks for a security-related purpose, and intermediary enforcement is the strongest answer. Web proxies are commonly paired with URL filtering, malware scanning, data loss prevention, and user identity policies. They are valuable because much modern attack activity starts through web access, phishing links, drive-by downloads, or unauthorized cloud services. Reference/topics: Network Security 3.3, proxies and URL filtering; Network Security 3.6, enterprise browsers.