3D electromagnetic field simulations are a very important aspect of integrated photonics design. They are able to describe component behavior when validated models obtained through measurements are unavailable or unreliable. Nevertheless, photonics design teams struggle with the organizational aspects required to consistently configure such simulations properly. It is necessary that the simulated geometry is a correct representation of the final fabricated structure, that the material models used are correct under operating conditions and that the simulation settings are set sensibly to obtain an accurate result in a reasonable time. The automated link between IPKISS – a photonic IC design simulation and layout tool - and CST STUDIO SUITE® gives photonic circuit designers direct access to FDTD or FEM generated circuit models using the validated simulation settings set by device engineers. This ensures that models used by circuit designers can easily be regenerated with validated CST STUDIO SUITE simulation settings. This way, IPKISS keeps models up to date as the component layout, fabrication processes, operating conditions and material models evolve from design to design. In this eSeminar, the IPKISS-CST STUDIO SUITE link is demonstrated using the design of a glucose sensor.