#Web #scale #IT is the approach used for delivering large-scale cloud computing resources and infrastructure within an enterprise IT environment. It includes all measures and practices that allow large, established cloud-based firms to achieve a higher level of service delivery. Web-scale IT primarily describes how cloud enterprises such as #Google and #amazon Web Services are using a set of IT solutions and services to deliver an enterprise-class, cloud-enabled, Web-scalable IT infrastructure. It calls for designing cloud-based data centers and IT Infrastructures that offer services beyond scalability to include agility and supreme service levels.