The European Commission considers research infrastructures as key elements for the advancement of knowledge, structure the scientific community, facilitate open, interconnected, and data-driven science, and attract young people to science. PIGWEB is a Horizon 2020 project that started on March 1st, 2021. The aim of the project is to strengthen the pig research community by providing and facilitating access to research infrastructures, reinforce a culture of cooperation between the research community and industrial and societal stakeholders, and improve and integrate the services provided by the research infrastructures. The project gathers 16 partners from nine countries. Twentyeight installations provide transnational access, allowing external parties to carry out experiments in the PIGWEB installations, funded by the project for a total budget of 1.5 million euro. Transnational access is given to various housing facilities and production systems, slaughterhouses and associated equipment, experimental feed mills, and laboratories to carry out studies on pig nutrition, metabolism, physiology, behaviour, and emissions. The project also focusses on best practices for protocols, standards, and ethics in experimental pig research and on ontologies and Open Data. Joint research activities are carried out to identify and test non- and minimally invasive proxies of efficiency, health, stress, and environmental impact. Also, new methods, tools, and technologies will be developed to measure traits that are currently difficult to measure, related to welfare, behaviour, and body composition. Newly developed and available research methods and tools will be tested to carry out integrated phenotyping of pigs.