Here is a great article explaining IPTC metadata!
IPTC metadata is the cornerstone of good image management and protection. It’s incredibly useful for news agencies, museums, image archives and other organizations, where a complete picture of image details is typically required.
It’s also a key part of Google’s upcoming Licensable badge, which aims to make image sourcing and licensing straightforward, thus reducing the likelihood of unauthorized use.
Not sure how to use it? Here’s what you need to know.