The correct answer is a community of practice.
Communities of Practice constitute a collaborative learning network, formed by individuals who engage, interact and share knowledge and practices related to common interests, valuable for the development of their individual competence and for the evolution of society as a whole.
A community of practice consists of a group of people who share an interest in a subject or problem and learn from regular interactions. This contact between members of the community can occur in person or even virtually, but it should allow for the exchange of information and knowledge, which, when put into practice by other members, help in the search for solutions and best practices, promoting the learning of the group.