The main objective of PQ-REACT project is to design, develop and validate a framework for a faster and smoother transition from classical to post-quantum cryptography for a wide variety of contexts and usage domains. This framework will include PQC migration paths and cryptographic agility methods and will develop a portfolio of tools (including an actual quantum computer) for validation of post quantum cryptographic systems, that will allow users to switch to post-quantum cryptography, taking under consideration their individualities and various contexts.