Cost per mille, often abbreviated to CPM, means that advertisers pay for every thousand displays of their message to potential customers (mille is the Latin word for thousand). In the online context, ad displays are usually called "impressions." Definitions of an "impression" vary among publishers,[58] and some impressions may not be charged because they don't represent a new exposure to an actual customer. Advertisers can use technologies such as web bugs to verify if an impression is actually delivered.[59][60]:59 https://s3.amazonaws.com/mailbakery/wp-content/uploads/2017/06/28123309/25_Brilliant-670x310.jpg

The term originated in the early days of email marketing when sending a mass mailing (read: blasting) was a new idea that contrasted with the more familiar way of using email as two-way correspondence. At the time, the internet was a lawless wasteland didn’t have many regulations, so once the wrong person got ahold of your email address, they could and would spam you with whatever they pleased. It was completely free advertising!
Consumers also face malware risks, i.e. malvertising, when interacting with online advertising. Cisco's 2013 Annual Security Report revealed that clicking on ads was 182 times more likely to install a virus on a user's computer than surfing the Internet for porn.[105][106] For example, in August 2014 Yahoo's advertising network reportedly saw cases of infection of a variant of Cryptolocker ransomware.[107]
Using Dr Dave Chaffey's approach, the digital marketing planning (DMP) has three main stages: Opportunity, Strategy and Action. He suggests that any business looking to implement a successful digital marketing strategy must structure their plan by looking at opportunity, strategy and action. This generic strategic approach often has phases of situation review, goal setting, strategy formulation, resource allocation and monitoring.[60]

As a growing business, you may also be looking for a CRM solution, and you'll find that the more advanced email marketing services have begun to crossover into CRM. It makes sense: Both types of software deal with managing and communicating with customers. A handful of these services are one-stop shops, either offering both email marketing and CRM out of the box or as add-on services.

The books I've written have actually had three different titles, updated to move with the times. My first text book was titled: Internet Marketing: Strategy, Implementation and Practice. I then created E-business E-commerce Management and, with PR Smith, E-marketing Excellence, for professionals a couple of years later. Then, much later, the names switched and in 2012 we renamed the Internet Marketing book to Digital Marketing with the others becoming Digital Business and Digital Marketing Excellence.  About time too, since I was involved in developing the syllabus as an examiner for the first IDM Diploma in Digital Marketing back in 2004-5 when the term was hardly used at all - so it's been great to see 'Digital Marketing' adopted as the 'de facto' term, when I was first involved in defining it with the IDM students in 2004!
A disadvantage of digital advertising is the large amount of competing goods and services that are also using the same digital marketing strategies. For example, when someone searches for a specific product from a specific company online, if a similar company uses targeted advertising online then they can appear on the customer's home page, allowing the customer to look at alternative options for a cheaper price or better quality of the same product or a quicker way of finding what they want online.
An omni-channel approach not only benefits consumers but also benefits business bottom line: Research suggests that customers spend more than double when purchasing through an omni-channel retailer as opposed to a single-channel retailer, and are often more loyal. This could be due to the ease of purchase and the wider availability of products.[24]
×