I followed the same guide when I learned SWF and used it in a project. I appreciated the detailed guide and was amazed by the flow framework. Because of flow&#x27;s magic and the steep learning curve, I believe SWF might be the most underestimated AWS service. I agree that the java flow framework is complicated but very powerful as well. Seems the ruby flow framework is simpler to use (<a href="http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;amazonswf&#x2F;latest&#x2F;awsrbflowguide&#x2F;helloworld.html" rel="nofollow">http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;amazonswf&#x2F;latest&#x2F;awsrbflowguide&#x2F;h...</a>).