Chris and Carol are experienced digital marketers who have partnered to create an agency called Web Matters that provides digital marketing services exclusively to property professionals. They outline the SOSTAC framework for developing an effective digital marketing strategy, which involves analyzing the current situation, setting objectives, developing strategies and tactics, taking action, and controlling the results. They emphasize using emotional appeal throughout digital campaigns to expand markets, attract and qualify new business, improve communications, raise awareness, build reputation, enhance customer service, and increase sales.