Do you need an Advertising Agency in Irvine, CA? LocalSpark has found the best digital advertising and marketing businesses in Irvine. In the current aggressive marketplace, it’s essential to hire a reputable advertising agency if your company wants to remain competitive. Advertising agencies help their clients with search engine optimization, PPC, web design, graphics, social media, and other digital marketing strategies that improve your company’s online image and outreach. Here, we have organized a list of the best Irvine, CA, Advertising Agencies.