Based in Denver, Cardinal Concepts serves clients throughout the local metro and nationwide. The agency—starting as a partnership between a marketing professional and a divorce attorney—creates and implements marketing campaigns for law firms. It offers services like search engine optimization, pay-per-click advertising, and reputation management. The agency also develops and designs websites optimized for desktops and mobile phones. Other solutions include e-mail marketing, video production, and photography. David Crum, its CEO, has over 25 years of experience practicing law. He manages a $12-million legal group.