Consulting & Solutions in Mathematical Optimization. Cassotis provides consulting services in optimization and operations research for medium and large companies. Our company efficiently designs, develops and deploys customized easy-to-use solutions to support complex decision-making. Cassotis’ solutions use state-of-the-art mathematical modeling, driven by data and inspired by microeconomic concepts. Deployed solutions are supported by a highly-skilled consultants team who collaborate closely with the customer to achieve better results. Cassotis also assists modelers and data analysts with extended mathematical modeling skills and renown tools.