Dear Galaxy developers, I have a collection of Java classes linked by a custom dataflow architecture. All classes are in a single project but some of these classes call executables written in languages other than Java. I am investigating the possibility of transitioning to Galaxy. Essentially my desires are to link these Java classes in a DAG representing the dataflow and to execute the dataflow in Amazon EC2. The data flowing along the edges are arbitrary custom Java classes. Additionally it is important to cache intermediate results. The data is acquired from a few web services: iRefIndex, IntAct, UniProt, and Gene Ontology. There are complex software dependencies so after setting up the dataflow I would like to save the entire system as an abstract machine image (AMI). How difficult would this transition be, and would it be worth the effort? Sincerely, with best wishes, Luqman Hodgkinson, Ph.D. student, UC-Berkeley