Integrated Marketing Communications (IMC), according to The American Marketing Association, is “a planning process designed to assure that all brand contacts received by a customer or prospect for a product, service, or organization are relevant to that person and consistent over time.” Marketing Power Dictionary Integrated marketing communication can be defined as a holistic approach to promote buying and selling in the digital economy. This concept includes many online and offline marketing channels. Online marketing channels include any e-marketing campaigns or programs, from search engine optimization (SEO), pay-per-click, affiliate, email, banner to latest web related channels for webinar, blog, RSS, podcast, and Internet TV. Offline marketing channels are traditional print (newspaper, magazine), mail order, public relations, industry analyst relations billboard, radio, and television.

http://en.wikipedia.org/wiki/Integrated_marketing_communications