Optimize every location's Google Business Profile first — it's the highest-ROI activity for multi-location businesses. Then implement geo-targeted paid search and social for each location individually, not a one-size-fits-all campaign. For a 300-location restaurant chain, I led a digital transformation that did exactly this: optimized all 300 GBP listings, launched hyper-local campaigns, and built an email and loyalty program from scratch. The local SEO improvements alone drove a 28% increase in 'directions requests' across all locations within 90 days.