Our lie detector serverless application uses Azure Cognitive Services for facial recognition, integrating with Courier API to send alerts based on deceiving emotions detected. The application consists of four parts: creating a serverless function using Azure Functions, authorizing Courier to send messages via Gmail and Twilio APIs, sending single and multi-channel notifications from the Azure function, and analyzing emotions with the Face API to detect deceitful faces. The application detects anger, neutral, or contempt emotions in the face being analyzed and sends alerts to our spy network if any of these values are greater than 0.