The map, produced by Gartner, provides a useful overview of a range of digital marketing channels and tools available to reach and interact with audiences online. As Gartner says:
“The rise of digital marketing is producing a fragmented and confusing landscape of terminology, providers and technologies. Gartner’s digital marketing transit map (…) will enable organizations to see every kind of service and technology that is available and how they relate to each other”.
See also Dave Chaffey’s excellent article “Maps for reviewing the range of insights tools to improve digital marketing”