The U.S. National Science Foundation (NSF) is offering a grant opportunity titled "Cyberinfrastructure Centers of Excellence" aimed at enhancing the nation's advanced research cyberinfrastructure (CI) ecosystem. The program seeks to establish hubs of expertise and innovation that will support specific areas of the research CI ecosystem, focusing on user-centric and interoperable resources that drive advancements in science and engineering research and education. With an estimated total program funding of $9 million, the NSF anticipates awarding three grants, each ranging from $1 million to $3 million, with proposals accepted on a rolling basis. Interested applicants can reach out to NSF grants.gov support at grantsgovsupport@nsf.gov for assistance and further details can be found at the provided NSF program description link.