API calls can quickly increase AWS costs, especially when using services like API Gateway, Lambda, and S3. This article clearly explains how each API request adds up, both directly and through related services. I learned that features like caching, throttling, and careful endpoint selection can help save money. The author gives real examples and practical tips for monitoring usage, setting limits, and using free tiers wisely. I appreciate how the article makes complex AWS pricing easy to understand and gives advice I can use right away. It’s a great guide for anyone managing cloud costs on AWS.