One link is here -- https://ms-iot.github.io/content/en-US/win10/AllJoyn.htm
Also a colleague of mine has done a great deal of work with and talked about this work over the last year or so. Here is a link to one of his talks -- http://www.omggeek.com/elc-2015-alljoyn-101-make-smarter-dev...
Part of the issue with IoT is what do you define as IoT, the devices themselves, data ingest, management infrastructure, etc. The whole topic is pretty broad.