XML endpoint - search.classic
search.classic is an entry point of the Modern UI that emulates the format of the Classic UI's
The modern UI provides an XML entry point, search.xml, that outputs an XML format different from the Classic UI.
search.classic tries to emulate this format, but uses the Modern UI under the hood.
Emulating the format means that if you’re using an XML wrapper, you should be able to take advantage of the Modern UI without having to change the code that interpret the XML output. For example if your wrapper uses the following XML entry point:
http://company.com/search/xml.cgi, you could change the URL to
http://company.com/s/search.classic and continue using your XML wrapper.
While most of the classic UI XML tags are emulated, some aren’t:
The faceted navigation tags
The tier bar tags