For a tier-1 multilane retailer, analyzed the enterprise payment processing platform, technology infrastructure, and systems architecture employed by this retailer for processing electronic payment transactions in its 4,700 retail store locations and internet channel. We performed a detailed assessment of their corporate data center based payment processing infrastructure which is dedicated to supporting card and check based electronic payments for the overall enterprise. We also evaluated the technology configuration and approach that is in place at their retail stores for acceptance of electronic payment transactions.