The approach differs significantly based on company maturity in the Mountain View ecosystem. For early-stage startups: Agencies typically focus on rapid experimentation across channels with smaller budgets ($3,000-$8,000/month), emphasize product-market fit validation through targeted campaigns, prioritize metrics like cost-per-acquisition and lead quality over brand building, and often work on flexible arrangements that scale with funding rounds. For established tech companies: Agencies implement comprehensive multi-channel strategies with larger budgets ($15,000-$100,000+/month), balance demand generation with brand authority development, employ sophisticated attribution models across longer sales cycles, and focus on market share growth against specific competitors in the Valley. The best Mountain View agencies understand this spectrum and can adapt their approach as companies evolve from startup to scale-up phases. They'll also have established relationships with local venture capital firms, tech media outlets, and industry influencers that benefit clients at different growth stages.