Measuring retargeting ads in local social campaigns primarily involves tracking conversion-focused metrics to assess their direct impact. Key indicators include the conversion rate, revealing what percentage of retargeted users completed a desired action such as a store visit, online order, or reservation at a local business. Another crucial metric is Cost Per Acquisition (CPA), which calculates the expense incurred for each successful conversion, directly impacting profitability. For local campaigns, tracking offline conversions and store visits attributed to the ad exposure is paramount, often measured through geo-fencing or loyalty program integrations. Furthermore, evaluating Click-Through Rate (CTR) indicates the ad's relevance and appeal to the audience, while Return On Ad Spend (ROAS) provides a direct measure of the financial profitability generated. Ultimately, analyzing these metrics collectively helps optimize ad spend and enhance the effectiveness of re-engaging local audiences.