It's completely written in client-side JS using quasar framework (vue), hosted on netlify, with ipfs hosting provided by fleek + cloudflare.
This is the most important innovation. I can't stress that enough. As you tweeted on the 9th:
For the non-techy folks, what this means is that @ausbitbank's custom front-end requires near-zero hosting resources. If you can access the page, it works, even if AWS "pulls the plug." AWS can't pull the plug because it's not hosted on AWS. It could be loaded from a USB drive, for that matter.