CST Studio Suite comprises CST’s simulation software offering. It includes the technology leading high frequency 3DEM simulator CST Microwave Studio. Researchers and engineers use CST STUDIO SUITE for the design of EM based components in application areas as diverse as MW&RF component design, EMC and signal integrity analysis. CST’s software release, CST STUDIO SUITE version 2011 and its multitude of powerful new features and functionality can help them to streamline their workflows and shorten development cycles. Automatic optimization and sensitivity analysis are key requirements in a highly efficient design flow. Both of the CST MICROWAVE STUDIO (CST MWS) general purpose electromagnetic solvers – time and frequency domain - can provide sensitivity information for an arbitrary number of parameters in just one simulation run. The newly implemented trust region framework in CST STUDIO SUITE 2011 can employ the sensitivity information to cut down optimization time dramatically. Yield analysis for complex three dimensional models is now available at virtually no additional computational cost. High performance computing options are now also available for the frequency domain and the integral equation solver.