IT Infrastructure is a comprehensive framework that supports and enables an organization's operations and goals. It combines hardware, software, network resources, and services, creating the backbone of any modern business. Coursera's IT Infrastructure catalogue equips you with the knowledge to design, manage, and optimize these complex systems. You'll learn about server and network management, data storage and retrieval, system scalability, disaster recovery strategies, and ensuring system security. As you delve deeper into this agenda, you'll gain an understanding of infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS) models. By the end, you will be prepared to manage and troubleshoot an organization's IT infrastructure effectively.