A walkthrough on how to schedule an AWS Lambda function to execute at a precise time (within ~100ms) using AWS Step Functions. The tutorial covers creating a .NET Lambda function, building a Step Function state machine with a Wait state that pauses until a specified timestamp, and then invokes the Lambda with the remaining input payload. It contrasts this approach with EventBridge Scheduler, which only guarantees minute-level precision, and notes that for complex Lambdas with longer startup times, scheduling slightly early and sleeping in code may be needed.
