OpenRules always was among the fastest decision execution engines. Our newest OpenRules Decision Manager was designed to provide super-fast performance for modern enterprise decision-making applications that handle millions of rules-based transactions per day and to naturally support cloud-based microservices. Now we started to receive a very positive feedback from our customers:  after switching to the newest OpenRules Decision Manager the same decision models show 6-10 times performance improvement! If you decide to switch as well, you may take advantage of our Migration Services.