Development of the Open Infrastructure and Pulsar Network to support distributed job execution and scalable Galaxy deployments across Europe. Project: EuroScienceGateway was funded by the European Union programme Horizon Europe (HORIZON-INFRA-2021-EOSC-01-04) under grant agreement number 101057388 and by UK Research and Innovation (UKRI) under the UK government’s Horizon Europe funding guarantee grant number 10038963. Document: D3.1 Operations documentation on the Open Infrastructure deployment Work Package: Work Package 3. Pulsar Network: Distributed heterogeneous compute. Task: Task 3.1 Develop and maintain an Open Infrastructure baseddeployment model for Pulsar endpoints. Task 3.3 Build a European-wide network of Pulsar sites. Task 3.5 Developing and maintaining national or domain-drivenGalaxy servers. Lead Beneficiary: INFN Contributing Beneficiary: INFN, ALU-FR, CNRS, CESNET, UiB, BSC, VIB, IISAS, TUBITAK and CNR Executive Summary Work Package 3 of the EuroScienceGateway project is divided into 5 tasks, aimed at bringing into production (TRL9) the Pulsar Network , a distributed computing network that allows public Galaxy servers to offload jobs to remote computing clusters provided by project partners. Specifically, this deliverable describes the work done in tasks 3.1, 3.2, 3.3 and 3.5. The main objectives of WP3 are: 1) to simplify the deployment and management of new Pulsar and Galaxy endpoints (T3.1 and T3.5), to make Pulsar compatible with the GA4GH TES specifications (T3.2), and to deploy new Pulsar endpoints (T3.3)