Lambda functions in AWS operate on a "pay-as-you-go" pricing model, which includes a free tier. This free tier allows developers to use Lambda functions for small-scale applications at no cost, up to a certain limit.
The Lambda free tier includes 1 million free requests per month, as well as 400,000 GB-seconds of compute time per month. GB-seconds are a measure of the amount of memory used by the function multiplied by the duration of its execution in seconds. This means that you can run a Lambda function for up to 400,000 seconds (or about 4.6 days) per month with a 1GB memory allocation.
In addition to these free resources, the Lambda free tier also includes 3.2 million seconds of free execution time per month for AWS Lambda@Edge. This allows developers to run code on edge locations closer to their users for faster performance.
Once you exceed the free tier limits, you will be charged based on the amount of resources your function uses and the number of times it is invoked. The charges will be based on the duration of the function execution, the amount of memory allocated to the function, and any other resources that the function uses, such as network requests or data storage.
It's important to note that even though the Lambda free tier allows for limited usage, it still provides developers with a powerful and flexible serverless computing platform that can be used to build and deploy scalable and highly available applications without needing to manage infrastructure.
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