> "This project was a fixed cost, fixed scope with a fixed deadline - if we didn't launch this new site in 4 months, the current live site was going to be taken offline by the previous agency, due to their contract and hosting ending."

Author mentions this, but there is really no point to use agile methods for such a project. Agile is not for task tracking.

With that said, if the project has uncertainty about what's wanted, UX is still researching or whatever, I'd still probably have dev-driven increments and demos to pin people down on making decisions. No external mgmt running that though.