Data centers are facilities housing computer systems and networking infrastructure to store, process, and distribute data. They are critical for supporting digital services, including cloud computing, e-commerce, and social media. These centers consist of servers, storage devices, and network equipment, maintained under strict environmental controls like temperature, humidity, and power management for optimal performance and reliability. Data centers are categorized as on-premises, colocation, hyperscale, and edge, depending on size and function. Sustainability is a key focus, wit innovations in energy efficiency and renewable power usage driving the future of data center operations.