Blending technology has advanced in bits and pieces over the last 50+ years to its current state. These changes did not happen overnight or in one step. They happened as the business regulations changed, advancement in car manufacturing required better fuels, and competition increased from other refineries in the world. The blend control has migrated from mainframe computers to workstations and now even to higher-end servers and PCs on the hardware. The software has moved from machine assembly languages to user-friendly languages like Fortran, Visual Basic, C++, etc., and the operating system from IBM’s MVS mainframe system to Microsoft Windows. This topic will discuss advances in blending technology hardware and software.