Mortgage, home equity, and auto lenders utilize many core and ancillary technologies from the point of sale through loan onboarding to the servicing system. Until recently, however, mortgage closings (loan closing document signings) remained an in-person, paper-based event. COVID-19 has threatened lenders ability to close and fund mortgages and left customers dissatisfied. This Primer provides a blueprint for lenders to assess the technology and process changes required to automate "the last mile" in digital loan origination.