Tony Hillerson presented on using Flex and Rails together. He discussed using XML, JSON and AMF for communication between the two frameworks. AMF provides the best integration as it handles data types automatically. The workflow for developing with Flex and Rails using AMF involves generating models, migrating the database, adding sample data, testing, configuring AMF mappings, wiring services, and repeating. Future improvements may include developing AMF as a gem and C extension. Resources for learning more are provided.