catalyst s+f is a brand strategy firm; we provide strategic marketing services, rooted in media, for start-ups and brands. If youÍre business involves digital marketing, we can help you be successful by developing strategy, executing tactical campaigns, keeping you up to date on your audience and making introductions that result in actionable business. Our expertise lies within emerging media while our 50+ years of collected experience includes many of the top brands, publishers and agencies in the world.