 BEDFORD, Mass.--BUSINESS WIRE--Aspen Technology, Inc. NASDAQ:AZPN, a global leader in asset optimization software, today announced that Ecopetrol, the largest petroleum company in Colombia, has selected Aspen GDOTTM dynamic optimization software as part of its digitalization initiative to improve refining margins at its two refineries in Cartagena and Barrancabermeja, and upgrading to Aspen DMC3TM advanced process control software in Barrancabermeja refinery. Optimizing production and increa 