conference.ualberta.ca is the University of Alberta's conference services page. It redirects to the official university site, which makes sense for an institution of its size. The university has been online for decades, and this subdomain has been in the Wayback Machine for nine years. That kind of history is a green flag.
From a security perspective, the site uses modern encryption and safety headers like content security policy. The SSL certificate expires in a few days, but that's a quick fix, not a sign of trouble. There are no blacklist entries or Google Safe Browsing warnings.
Some privacy policies and terms of service common on commercial sites aren't present here, but that's normal for a university information page. If you're looking for conference services at U of A, this site is the real deal. Is conference.ualberta.ca safe? Absolutely — it's an official university site with a clean track record.