The Observable Framework Homepage still provides a link in the header to the Canvas homepage which seems to be a 404 (I guess this project has been discontinued as I cannot find active documentation for it anywhere)
Thanks @septatrix, I’ll fix. We’re no longer actively developing or taking new customers for Canvases, but there’s documentation here for existing customers: Canvases | Observable documentation
Working on clearing this all up on the website, sorry for the confusion, it’s a mess right now!