The Industry AI Days 2023 open day event at Testbed for industry 4.0 at CVUT CIIRC presented an exciting opportunity for industry professionals to meet the ecosystem of the National Center for Industry 4.0 and experience the innovative technologies offered by the Testbed for Industry 4.0. This event serves as a catalyst for knowledge sharing, collaboration, and the adoption of advanced technologies, ultimately driving the growth and competitiveness of small and medium-sized enterprises in the realm of digitization, automation, and industrial innovation.