We Serve Agencies, Publishers & Resellers Around the World. Whether your business is in the midst of its own Digital Transformation or has fully embraced the need to service your advertising clients with an agency approach – you’ve found the right partner with January Spring. As you get to know us, you’ll see we don’t act like a big, stuffy firm. We want to be your partner in this fast-changing advertising world. Count on us for well-informed advice, high-touch service, and the best digital marketing solutions. That’s the promise we make every day, to every partner.