Managing Complex Java Workflows With Unify-flowret See if this lightweight Java orchestration engine is right for you. by Join the DZone community and get the full member experience.Join For Free Unify-flowret is a lightweight Java orchestration engine that can scale from the simplest of workflows to the most complex ones. Read more about it on https://github.com/americanexpress/unify-flowret. You may be wondering... Why another orchestration engine when there are already so many? We have off the shelf commercial “heavyweights,” open-source frameworks like AWS step functions/Uber Cadence/Netflix Conductor, and a host of others. Why another one?