text: The term "Digital Marketing" was coined in the 1990s. Digital marketing was formally known as and referred to as 'online marketing', 'internet marketing', or 'web marketing'.  Worldwide digital marketing has become the most commonly used term and has taken off in the business industry, especially after the year 2013. However in other countries like Italy, digital marketing is still known as web marketing.
  Digital media growth was estimated at 4.5 trillion online ads served annually with digital media spending at 48% growth in 2010. An increasing portion of advertising stems from businesses employing Online Behavioural Advertising (OBA) to tailor advertising for internet users, but OBA raises concerns about consumer privacy and data protection.
  New non-linear marketing approach
  Nonlinear marketing, a type of interactive marketing, is a long-term marketing approach that builds on businesses collecting information about an Internet user's online activities and trying to be visible in multiple areas.
  Unlike traditional marketing techniques, which involve direct, one-way messaging to consumers (via print, television, and radio advertising), nonlinear digital marketing strategies are centered on reaching prospective customers across multiple online channels.
  Combined with higher consumer knowledge and the demand for more sophisticated consumer offerings, this change has forced many businesses to rethink their outreach strategy and adopt or incorporate omnichannel, nonlinear marketing techniques to maintain sufficient brand exposure, engagement, and reach.