The European Cards Stakeholders Group (ECSG) is an International Non-Profit Association founded in 2016 and located in Brussels. The purpose of the ECSG is the definition of SEPA requirements for card-based services. Its membership is open to any entity active in the market for card related or card-based services in an EEA Member State, and it organises itself as a multi-stakeholder group alongside the following industry sectors over the full value chain of card-based services: • Retailers; • Vendors (manufacturers of cards, payment devices, and/or related IT systems); • Processors (of card transactions); • Card Schemes and • Payment Service Providers. ECSG members must belong to one of these five Sectors. The main task of the ECSG is to maintain and evolve the ‘SEPA Cards Standardisation Volume’, a set of documents designed to enable card payment standardisation and harmonisation to promote the interoperability of card transactions in a secure environment throughout the SEPA region. The Volume defines the high-level standardisation requirements. Those requirements are used by the specification providers to write their specifications, which will be used to develop solutions. Specification providers can submit a request for a conformance label to the Volume Conformance Management Committee of the ECSG. The strength of the group is its organisation that includes the 5 sectors of the card payment value chain and by being a member, an organisation gets several advantages: • Valuable information on the developments of standardisation, • An active contribution in its design, • The capability to anticipate what its evolution will be • Through a close interaction with the regulators.