The profit efficiency and competitiveness on the market of hydrocarbon products are a must in nowadays Hungary. The new economical environment forces the former local companies to think global and to be innovative and proactive in acquiring and introducing worldwide new techniques and technologies All this effects the recently privatised MOL Hungarian Oil and Gas Companyl. The activity of MOL Hungarian Oil and Gas Company comprises mining, processing and trading in all kind of hydrocarbons in Hungary and in the region. Danube Refinery is the most complex refinery by ifs production structure where the crude processing is concentrated in the city of Szazhalombatta. Since its foundation in 1963 the refinery has been the major player in production and subsequent supply of a dominant part of the motor fuels marketed in Hungary. The Danube Refinery is currently capable of processing 7 MMTPA crude and issuing a couple of hundreds of different products as waxes, lube oils, specific solvents, fuels, maleic anhydride and motor fuels as the mainstay of its production. The quality development policy at the Danube Refinery has always been following the most advanced trends in environment protection and performance enhancement and economy. This mission has lead to a challenge and commitment to pursuit of excellence in both products' qualities and the technologies involved in their manufacturing. Most refineries have already recognised that their overall utilisation ratio is capped by market limitations and that in order to widen their margins they should find some other ways like reaching higher throughputs at conversion facilities by debottlenecking, using sophisticated control tools alleviating some vital constrains maintaining lighter product specifications closer to the quality constraints, maintenance cost reduction, energy efficiency improvement and environment pollution control Most of the above involve a higher level of process control techniques than those implemented in the past. The use of the highly sophisticated Advanced Process Control (APC) and Optimisation technologies developed by Aspentech and customised to the actual processes of the Refinery by local specialists is not only a new feature of the control system of production facilities but a significant enhancement of the technical skills of the workforce at Danube Refinery. Based on the software applications the refinery expects to stabilise quality production, increase valuable product yields and to reduce maintenance costs to get a higher profit and a stronger competitive position. This paper outlines an overview and history of APC technology at MOL and highlights the benefits reaped from the SMCA applications and the current move into the DMCPlus technology.