Why SPAs? They're good when you develop capabilities API-first. When we build features, we follow an approach of making the feature possible (customer support c

Why SPAs? They're good when you develop capabilities API-first. When we build features, we follow an approach of making the feature possible (customer support can exercise the feature with PostMan or cURL) then making it friendly with a UI. There will be some tweaks and changes to the API to support the UI, but it's rarely drastic, and it ensures that every single capability we build out can be exercised by some other kind of program somewhere. If you're building components of a larger system (which we do), SPAs and web components atop back-end APIs make sense. If you're building a one-off fill-out form kind of application... No those don't make sense. You don't even need JavaScript for those, if you degrade into just HTML + CSS for users that have shut off JS.