Google Cloud Functions is a platform that enables you to create and run code on Google’s infrastructure without having to install any software. The code can run on Google’s servers, in the Google Cloud Platform infrastructure, or on your own servers.
Google Cloud Functions charges a monthly fee for use. However, the platform offers several discounts and free resources, such as the Compute Engine instance type, the Google Cloud Storage bucket, and the Google App Engine application runtime.
Overall, Google Cloud Functions is a powerful platform that can help you create scalable, reliable applications. However, it does charge a monthly fee, so it’s not free.