This is my notes on Georgia Tech's ISYE 6669: Deterministic Optimization. Optimization is the process of adjusting a system to achieve the best possible performance or outcome. Deterministic (non-stochastic) optimization is a mathematical approach to finding the best solution to a problem by systematically searching the solution space for the optimal outcome. The optimization process is based on a set of deterministic (i.e., non-random) rules and algorithms, and the result of the optimization process is unique and repeatable.