Question: what is iptc in lightroom?
Answer: 'IPTC' gives a good overview of metadata on the photo. In Lightrooms right rail, look at the Metadata panel. At the top, there is a flyout for views. (There isn't enough room in the panel to show all the fields, so this is necessary.) 'IPTC' gives a good overview of metadata on the photo and is my personal default.