[chrisabrams]

Given that your Remix version has been ~2 years in development by X number of developers, what are the other expected outcomes? It sounds like potential SEO performance is unknown? Is the development team happy with the choice? I can't recall working somewhere that allowed us to work on a project for two years and not release to production, how did you get business buy in?

[giraffe_lady]

You don't need buy-in when they tell you to do it!

Not OP but I've definitely seen a "leadership has decided on a rewrite into a new technology" project not ship for a couple years. I doubt it ever shipped, I didn't stay around to find out.

[dlevine]

The other outcomes are a redesign and more configurability plus a bunch of new features. It wasn't really an apples to apples comparison. The non-iFrame version was more of a 1.1, where the new thing we are building is a 2.0. Based on some other projects, I do suspect it would have gone faster if we built it on the old stack.

The development team made the choice to go with Remix (well, the tech lead and VP of engineering). No one had used this tech before. We have subsequently talked about whether it would have been better to do the whole thing with Rails + Hotwire. We have been using this approach elsewhere in our stack, and it seems to be a lot conceptually simpler than rendering JS server side and then hydrating it.