I love simplicity. Especially when it comes to "let's stomp out a marketing campaign. Quickly."
And design isn't always complicated or difficult. Nor does it always take ages to come to fruition. Sometimes you get a vague brief and go "... I've got it!" within seconds.
And 15 minutes later, you've got a pretty decent mock-up of what your final campaign art will look like. Take a stock photo, Photoshop a billboard unto a remote building, some quickly placed blurring for depth-of-field, and a giant red circle.
Throw in some copy and you're golden.
Here's the photo's origin; https://www.shutterstock.com/image-photo/lonely-fjords-house-638772988