Google AdWords allows businesses to target local customers through search engine advertising. It provides reach by displaying ads alongside relevant search results. Businesses can track an ad's effectiveness through dashboards and gain insights into how customers find them. O2 helps businesses with AdWords through its Reach program. O2 selects keywords, creates ads, sets up and optimizes campaigns, manages budgets, monitors performance, and reports results for clients. This allows businesses to focus on their operations while O2 handles the ongoing management of AdWords campaigns.