A small serverless SaaS on AWS cost 74 cents in October, mostly fixed fees

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A developer running a small SaaS on AWS with Lambda, DynamoDB and CloudFront shared the real bill for October, the product's launch month. The total was $0.74, filtered by a resource tag, with Route 53 and KMS fixed charges making up most of it. Compute, database and CDN usage all fell within free tiers, and the largest variable cost was S3 requests, largely from the owner's own deployments and log downloads. Email and AI summary costs were not visible under the tag, since SES had no line item and Bedrock calls were untagged. The author notes that most costs scale with usage, while the hosted zone and encryption key charge regardless of traffic.

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