IRIS is a robust solution for RF and analog IC electromagnetic simulations, crucial for addressing parasitic effects at high frequencies. Integrated with Cadence Virtuoso, IRIS ensures designers can execute precise electromagnetic field simulations within their design environment. It employs advanced 3D planar EM solvers based on the method of moments (MoM) to accurately model materials' skin and proximity effects. Additionally, IRIS facilitates design cycle reduction through parallel processing capabilities and unparalleled integration of front-end and back-end design environments, optimizing both synthesis and verification processes for RF circuits.