modeFRONTIER is a multidisciplinary and multi-objective software written to allow easy coupling to any computer aided engineering (CAE) tool. modeFRONTIER refers to the so-called “Pareto Frontier”: it’s the ideal limit beyond which every further implementation compromises the system; in other words, it represents the set of best solutions possible. The complex algorithms within modeFRONTIER can spot the optimal results, even conflicting with each other or belonging to different fields. Optimization is the key to reach this goal, achievable through integration with multiple calculation tools and explicable by effective post-processing tools. Generally speaking, optimization can be either single-objective or multiobjective. An attempt to optimize a design or system where there is only one objective usually entails the use of gradient methods where the algorithms search for either the minimum or maximum of an objective function, depending on the goal. One way of handling multiobjective optimization is to incorporate all the objectives (suitably weighted) in a single function, thereby reducing the problem to one of single objective optimization again. This technique has the disadvantage, however, that these weights must be provided a priori, which can influence the solution to a large degree. Moreover, if the goals are very different in substance (for example cost and efficiency) it can be difficult, or even meaningless, to try to produce a single all-inclusive objective function. Image True multiobjective optimization techniques overcome these problems by keeping the objectives separate during the optimization process. It should be kept in mind that in cases with opposing objectives (an example would be to try to minimize a beam's weight, and also it's deformation under load) there will frequently be no single optimum, since any solution will be a compromise. The role of the optimization algorithm is then to identify the solutions which lie on the trade-off curve, known as the Pareto Frontier (named after the Italian-French economist, Vilfredo Pareto). These solutions all have the characteristic that none of the objectives can be improved without prejudicing another.