Dell's value chain consists of primary and support activities that work together to deliver products and services to customers. Dell revolutionized the PC industry by adopting a build-to-order, direct sales model that eliminated middlemen. Key activities in Dell's value chain include procurement from major suppliers like Intel and Microsoft, inbound logistics to receive materials, assembly and testing in their own facilities, direct sales and marketing to customers, and post-sales support services. Dell aims to provide the best customer experience at each stage of the value chain.