Apple GSMs own the commercial relationship with our enclosure manufacturing partners and are responsible for cost negotiations, continuity of supply, risk management, driving operational and cost efficiencies through process or design change, as well overall project execution. GSMs sit at the intersection of Apple's business activities and engineering communities, and effectively balance the needs of both groups to ensure successful product launches. Enclosure components (such as the housing, cover glass & buttons) define the look, feel and expression of Apple’s globally recognized industrial and product design. GSMs work in concert with operations, supply quality, and supply base engineers as well as Apple’s Product Design and Industrial Design teams. Together, these teams execute and scale both new and existing manufacturing processes, materials, technologies, finishes and form factors.