A PYMNTS tweet states that building a domestic instant payment rail is the easy part while connecting systems to five neighbors without separate deals is harder. It describes Project Nexus as the project tying together the instant payment systems of Malaysia, Singapore, Thailand, Indonesia and the Philippines through one common framework. The linked PYMNTS.com article reports that real-time payments in Asia-Pacific are entering a new phase after years of building domestic instant payment rails, with countries now advancing interoperability.