Marketing may be a lot more complex these days, but that opens up some new opportunities, too. For example, it’s easier than ever to test different marketing messages to see which ones work best. Digital ads with different messages can link to different landing pages. Digital and variable data printing let you try different offers in different markets or with different demographic groups to see which generate a better response. Split emails let you test different subject lines to see which ones have a higher open and click-through rate. How can you test what you’re doing to see what’s really working?