What is the difference between a PURL, a domain, and a partial redirect?
A partial redirect is a special-purpose PURL that acts like a domain. A regular domain has no associated URL. While a partial redirect has a URL associated with it, that URL is not guaranteed (or even expected) to reference an actual resource. The URL associated with a partial redirect may only be a prefix common to the complete URLs of multiple resources. In contrast, the URL associated with a PURL is expected to reference a single actual resource.
