AWS offers a variety of pricing plans to suit different organizational needs, including pay-as-you-go, reserved instances, AWS spot instances, savings plans, and the free tier. The pay-as-you-go plan provides flexibility but can be expensive, while reserved instances offer significant cost savings for consistent usage. AWS spot instances allow organizations to purchase unused resources at a 90% discount, but with limited access. Savings plans enable customers to commit to a minimum spending amount and usage level for a set period, resulting in lower hourly rates for computing resources. The free tier offers three sub-tiers: always free, 12 months free, and trials, allowing organizations to experiment with AWS services without commitment. Using the AWS pricing calculator or optimizing cloud costs through automated solutions can also help reduce expenses. Understanding the various plans and resource limits is crucial to selecting the right plan for an organization and maximizing its existing resources.