This document has been developed by the Architecture Working Group of the EOSC Executive Architecture Working Group (EAWG). In December 2019 the Sustainability WG (ESWG) released the Tinman report on Solutions for a Sustainable EOSC, which evolved into the FAIR Lady report published on the 24th of November 2020. The ESWG described in the FAIR Lady document a first iteration of a Minimum Viable EOSC (MVE). Providing greater detail on the elements that require to be sustained, the present paper provides the view of the EOSC Architecture Working Group on the MVE. It uses the terminology introduced by the ESWG, namely EOSC-Core, EOSC-Exchange and MVE and focuses on the period to the end of 2023, corresponding to the first phase of the EOSC as defined in the Strategic Research and Innovation Agenda (SRIA). In developing its view on the MVE, the EAWG also considered the Briefing Paper on the EOSC Federating Core published by EOSC-hub and the vision and contributions from OpenAIRE to EOSC.