I have implemented both AMP and Instant Article "views" for a website and boy is the latter a bigger pain in the ass. The format is way more restrictive than AM

I have implemented both AMP and Instant Article "views" for a website and boy is the latter a bigger pain in the ass. The format is way more restrictive than AMP. Whereas the latter allows for nested lists, columns, or nested pictures Instant Articles require almost everything to be linearly placed on the top level. So unless your source format has a similarly simple structure you will have to think about ways to transform it down to that. Then, documentation is missing all the crucial details, so I ended up sifting through FB's SDK internals, which still ended up not covering all the issues reported by the web editor. Also, the only way to visually test the output is via the Page Manager app.