This Session 4 video from Data Center Guru traces the evolution of computing and data centers—from early mainframes and client–server setups to cloud and today’s hybrid IT—and explains how facility design scaled from ad?hoc server rooms to enterprise data centers, co-location, hyperscale campuses, and emerging edge sites to meet latency, efficiency, and scalability needs. It discusses how business dependence on technology shifted from support to enabler to core lifeline post?2020, and then classifies data centers by application, usage/reliability targets, ease and speed of build (greenfield, retrofit, modular), and size/scale (captive, multi?tenant, hyperscale, edge), including sustainability trends and the push toward greener operations and large data center parks for long?term growth.