INDEPENDENT aims to overcome the main obstacles for large-scale adoption of flexibility services in buildings and industry by providing an Integrated Development and Operations Platform (IDOP) for standard-compliant Customer Energy Management Systems (CEMS) and Aggregator Energy Management Systems (AEMS). IDOP will be interoperable with over 40 energy management systems and 60 smart appliance vendors and cover 90% of the flexibility in buildings and industrial sites. IDOP will help to reduce energy costs and CO2 emissions by providing open interfaces, innovative AI, and optimisation solutions for flexible resource modelling, optimal control, multi-market operation, and the automated integration of legacy systems. Simultaneously, IDOP will significantly reduce the development, deployment, and operational expenses, thereby establishing DSFM as a sustainable business on a large scale. IDOP commits to full compliance with the DSFM standards, including the EN 50491-12 and IEC 62746 standard families, and the SAREF ontology. Additionally, IDOP introduces Gaia-X-compatible data spaces to govern data in buildings and industrial sites. The project brings together 14 partners, including four aggregators, seven EMS service companies, and two major home appliance manufacturers that will adopt IDOP-based solutions into their offerings. The IDOP-based CEMS and AEMS will be demonstrated and qualified in large-scale pilots in four countries. A total of 1,4 MWh flexibility capacity will be harnessed from buildings and industrial sites and connected to eight operational energy wholesale, TSO, and DSO flexibility markets to demonstrate the CEMS and AEMS at TRL 8. The IDOP solutions will enable the energy transition by reducing GHG emissions by 1.9 million tons a year for all customers in 6–10 years. The solutions provide also significant monetary benefits: 15% RoI and 3,6 billion EUR cost reductions a year compared to the situation without any DSFM solution.