What is one of the primary purposes of implementing a proxy server?

Implementing a proxy server primarily serves the purpose of caching and filtering requests to enhance response times for users. When a user makes a request for a specific resource, the proxy can cache the response, which means that if another user requests the same resource, the proxy can deliver it more quickly from its cache instead of fetching it again from the internet. This not only speeds up the access to frequently requested resources but also reduces bandwidth usage, as repeated data doesn't need to be retrieved from the original server every time.

Additionally, filtering is another critical function of a proxy server. It can control and restrict access to certain websites or content, promoting security and compliance with organizational policies. This dual purpose of caching and filtering tasks makes proxy servers valuable in enhancing both performance and security within a network.

While increasing user anonymity is often a benefit of using a proxy server, it's not the sole purpose. The performance and efficiency gains realized through caching and filtering function are generally more pivotal in the implementation of proxy servers. Moreover, proxies do not eliminate the need for firewalls; instead, they often work in conjunction with them to bolster network security.