Other concepts to discuss: > API versioning, perhaps in Services DSL, and toolset to enable factories and testing more easily against multiple versions > Modula

Other concepts to discuss: > API versioning, perhaps in Services DSL, and toolset to enable factories and testing more easily against multiple versions > Modular 'apps' from singular codebase: could single Rails codebase support multiple individual apps / services, consolidate onto single CI > deploy path, simplify / automate hot updating. Perhaps overly ambitious... Great ideas in your article.