To optimize your marketing spend, you need to monitor and measure your CRAC and ROI over time. You need to track and analyze your referral marketing data, such as the number of referrals, the number of conversions, the revenue per referral, the CRAC, and the ROI, and see how they change in relation to your referral marketing actions, such as launching a new campaign, changing an incentive, or improving a landing page. This will help you identify what works and what doesn't, and adjust your referral marketing strategy accordingly. You can use tools like Google Analytics, CRM, or referral software to collect and visualize your referral marketing data and metrics.
By following these steps, you can optimize your marketing spend with CRAC and maximize the benefits of your referral marketing strategy. You can increase your customer acquisition, retention, and loyalty, while reducing your marketing costs and increasing your revenue.