Optimizing your SEM campaigns requires monitoring and analyzing your performance. This will help you measure your results, identify strengths and weaknesses, and optimize your budget and bids. You can use tools like Google Analytics, Google Search Console, or Microsoft Clarity to track and analyze metrics related to your SEM campaigns, such as impressions, clicks, CTR, CPC, quality score, conversions, conversion rate, cost per conversion, ROI, bounce rate, time on site, pages per visit, exit rate, traffic sources, devices used to access the ads/pages, locations of visitors, and demographics. This data will provide valuable insights into how well your ads are reaching your target audience and generating leads/sales/desired actions; how relevant and effective they are; how well your landing pages are engaging and retaining visitors; and where/when/how visitors are finding and accessing your ads/pages.