High-end fashion brand Hermès likes to woo shoppers with rich, animated, Flash-based ads showcasing its luxury apparel and accessories. Eye-catching ads are important for a brand that sells shoes that can easily run a consumer $1,000 a pair. But using animated Flash technology from Adobe Systems Inc. meant a significant portion of its customer base viewing the ads on mobile devices-specifically those using Apple Inc. iPhones or iPads-couldn't view the ads because Flash doesn't render on those devices. To solve the dilemma, Hermès is using a service from DG, a vendor that helps brands and ...