Proxy Servers are intermediaries that sit between users and the web, offering varying degrees of security, privacy, and functionality based on usage. Coursera's Proxy Server catalogue teaches you how these servers operate, and their varied applications in web browsing, content filtering, and network performance. You'll learn how to set up, configure and manage proxy servers, understand their role in enhancing network security, and their functions in caching data to improve network performance. This skill will empower you to control internet usage in your organization, improve network operations, and secure sensitive data from potential threats.