RESS, or Essential Health and Safety Requirements, are mandatory criteria established by the European Union to ensure the safety of machinery and equipment. Originally focused on physical safety, RESS now also address cybersecurity risks that could impact health and safety. Manufacturers must comply with RESS when designing and producing machinery for the EU market, ensuring protection against hazards such as mechanical failures, electrical risks, and cyber threats. Compliance is verified during the CE marking process, making RESS a crucial part of product safety and market access in Europe.