My customer has an Office 365 subscription. They have several public websites built on SP2013. They want to be able to allow anonymous users to view pdf, word and excel documents using Office Web Apps (WCA).
Can I use Office Web Apps Online from a SharePoint 2013 on-prem. public website? rather than deploy or own infrastructure (2 WCA web servers, load balancer). I thought this was possible but I can't find anything to support/help me.