Search Adobe Stock for a range of brand-related imagery and add them to your Creative Cloud library.
Draw a rectangle over the first image, then apply a Freeform Gradient with just a few points of primary colors.
Open the Appearance Panel and set the Opacity property of the rectangle to a value of 75% and a Blend Mode of Difference. Apply the same effect to the other artboards by copying and pasting the gradient rectangle.
Choose Export for Screens from the Export option under the File menu, choose the JPG format and click Export Artboard.
Now you have a variety of digital ads for your campaign that are tied together through the use of gradients and color.
Check out this curated collection from Adobe Stock with more images that you can use in your next project.