Picture the mighty stalactites and stalagmites seen far below the planet’s surface, gracing so many striking caves. How were those impressive structures created? One drip at a time, of course.

Marketers can also use the drip approach for creating truly strong bonds with their audiences, cementing brand awareness, customer loyalty, and purchases, as well. Drip campaigns use a measured approach and pre-planned materials to reach out to potential leads at just the right times and, when executed well, can greatly increase the returns marketers get on their ad spend.

Artificial intelligence is becoming increasingly woven into the fabric of modern marketing. From data analytics to automated customer engagement, the role of the human marketer is evolving, not disappearing. There is still a need for empathy, creativity, and strategic thinking.

Donald Trump's first term in the White House put businesses' ability to deduct advertising expenses on the chopping block. Experts say his next term could have equally significant — and surprising — implications for the industry.