The concept of “shifting left" is an interesting one. In the software world, it means bringing testing and user feedback into the development cycle as early as possible so that developers can produce, and bring to market, a product that is better designed and more aligned with their customers' needs.
In the support world, "shifting left" means something a bit different. It refers to pushing work down and to the left, and ultimately out to self-service when appropriate. In doing so, they can provide end-users with solutions quicker and close tickets faster.
By moving solutions closer to the point of first contact—and closer to the customer's first issue—support can reduce complexity, resolve cases faster, and create more delighted customers.