The decision in 2017 to move back to a monolith considered all the trade-offs, including being comfortable with losing the benefits of microservices. The resulting architecture, named Centrifuge, is able to handle billions of messages per day sent to dozens of public APIs. There is now a single code repository, and all destination workers use the same version of the shared library. The larger worker is better able to handle spikes in load. Adding new destinations no longer adds operational overhead, and deployments only take minutes. Most important for the business, they were able to start building new products again. The team felt all these benefits were worth the reduced modularity, environmental isolation, and visibility that came for free with microservices.