[rumanator]

> No Lambda costs as it would be covered by the monthly free tier of 1M requests.

That's far from the full picture. AWS Lambdas are charged by units of computational resources that are expressed as multiples of 64MB of RAM used per 100ms, each rounded up to the next value and with a minimum charge of 128MB of RAM used. So you are only charged a fixed fee per request if all your requests are short-lived and barely use any computational resources. Long-lived processing tasks that require a bit of RAM are charged multiple times the value of a single request.

[merty]

You’re right, I should have mentioned that as well.

I didn’t go into those details because I was strictly talking about the project in the article and the compute time limit would not be exceeded for this project either.

400,000 GB-s is free every month, and even if the Lambda function ran for 2,592,000 seconds (equals to a month, way more than enough) using 128 MB of RAM (again, more than enough for a task like this), it would only use 324,000 GB-seconds.