In this video, Mike Hy, a senior specialist Solutions architect with Amazon Web Services, explores knowledge graphs in Amazon Neptune. He explains what knowledge graphs are and how they fit into the larger picture of Amazon Neptune, a managed graph database service within AWS. Mike demonstrates a travel knowledge graph, showcasing how to navigate relationships between entities like cities, attractions, and artists. He highlights Neptune's ability to integrate data from multiple sources and perform semantic reasoning. The demo illustrates how knowledge graphs can consolidate an organization's data, making it readily accessible and allowing users to gain insights by exploring relationships. Mike encourages viewers to deploy Neptune in their own AWS accounts and explore out-of-box knowledge graph notebooks for further experimentation.