Act as an e-commerce optimization specialist with 5+ years of experience in reducing cart abandonment rates. Provide a detailed, step-by-step strategy to minimize cart abandonment for [TYPE OF BUSINESS], focusing on [TARGET AUDIENCE] and leveraging [SPECIFIC TOOLS/PLATFORMS]. Include actionable insights on improving checkout flow, retargeting tactics, and trust signals (e.g., security badges, reviews). Address common pain points like unexpected costs, complex navigation, or lack of payment options. Format your response as a prioritized checklist with metrics (e.g., '1. Simplify checkout to under 3 steps—can reduce abandonment by 20%'). Tailor recommendations to [BUDGET CONSTRAINT].