PJ20 W2 “Master Planning” project is the continuation of the SESAR2020 Wave 1 PJ20 ATM Master Plan Maintenance project (AMPLE). Within the Single European Sky technological pillar, the European ATM Master Plan (ATM MP) is the long-term roadmap to guide and connect ATM Research and Innovation and Deployment in building the future European ATM System. The ATM MP Editions are approved by the SESAR Joint Undertaking (SJU) Administrative Board and the European Commission. They set out Performance Ambitions and a Vision for European ATM, aligned with ICAO GANP. The ATM MP is composed of three Levels; it can be consulted in the ATM MP Public Portal www.atmmasterplan.eu. By EU Regulation 409/2013, the ATM MP is the essential instrument allowing all European ATM civil and military stakeholders - Airspace users, Air Navigation Service providers, Airports, Network Manager, Airborne and Ground industry, SESAR Deployment Manager, Standardisation bodies and Professional Staff organisations - to share and further develop this common Vision for the future European ATM and setting forth the SESAR solutions which after successful research may be elicited to compose future Common Projects for operationally seamless and cost effective deployment. The ATM MP needs to be a living plan, kept abreast of evolutions of the European ATM performance, progresses of the SESAR solutions research results and of deployment. The duty of SESAR2020 PJ20 W2 Master Planning like its predecessor in SESAR2020 Wave 1, is to ensure the maintenance, update and alignment of the ATM MP three Levels as a Common Support Activity of the SESAR2020 Programme. Under the leadership of EUROCONTROL, through facilitated access to information rich performance based civil-military ATM data, PJ20 will bring together contributions of 24 SESAR2020 members, ensuring the broad ATM representativeness required from air navigation service providers, airports, airborne and ground industry and Network Manager.