In 2010, Joseph Gentle applied Operational Transform to enable collaborative editing in Google Wave. Since then, he has reimplemented the OT model in ShareJS and for other use cases to enable real-time editing. Nonetheless, in this post, he proclaims that Conflict-Free Replicated Data Types – CRDTs (a data structure designed to simplify distributed data storage and multi-user applications) – has superseded OT, which depend on centralized servers. He discusses some recent improvements to CRDT implementations, which have enabled this approach to scale more efficiently. Although he expresses strong confidence in CRDTS, he notes that further advancements are required to enable local-first software development.