The document discusses the opportunities and challenges of open data, linked data, and big data. It notes that while industries like banking, healthcare, marketing, and smart cities currently generate huge amounts of data, making this data open and linked online could provide many benefits. Examples are given of existing open data projects in these fields. The presentation argues that emerging technologies may help address challenges of storing and analyzing big linked data. Overall, the document advocates connecting previously isolated data "silos" to create shared open data resources.