What if you could simply define a function to live in the cloud and handle the designated workloads, and not have to worry about provisioning servers, allocating RAM, scaling the number of instances, or configuring load balancing? How great would that be? In fact it is pretty great, as you can discover by using AWS Lambda.
AWS Lambda is a compute service. You can set up Lambda functions to respond to events, such as changes to data, asynchronously. You can call them directly or through an API gateway, synchronously. And you can use them to respond to HTTP(S) requests, synchronously.
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