The document introduces STMicroelectronics' STM32Trust TEE Secure Manager for STM32H5 MCUs. The Secure Manager provides a trusted execution environment (TEE) that integrates core security services. It offers turnkey security services developed and certified by ST to help customers easily protect critical data, secrets, intellectual property and securely connect devices to clouds and servers. The Secure Manager simplifies the security customer journey and accelerates time to market. ST provides related development kits, documentation and support to help customers develop with and evaluate the Secure Manager.