Unlike most offline marketing efforts, digital marketing allows marketers to see accurate results in real time. If you've ever put an advert in a newspaper, you'll know how difficult it is to estimate how many people actually flipped to that page and paid attention to your ad. There's no surefire way to know if that ad was responsible for any sales at all.
To do that, you need a consolidated view of customer preferences and expectations across all channels – web, social media, mobile, direct mail, point of sale, etc. Retailers do this using omnichannel retail analytics. Marketers can use this information to create and anticipate consistent, coordinated customer experiences that will move customers along in the buying cycle. The deeper your customer insight into behavior and preferences, the more likely you are to engage them in lucrative interactions.