Lambda is AWS's serverless computing platform that runs code in response to triggers such as HTTP requests, file uploads to S3, or changes in DynamoDB. You don’t need to manage servers, as AWS automatically handles the compute resources. Lambda supports various programming languages and is highly scalable, allowing users to pay only for the time their code runs.
An IoT company uses Amazon Lambda for processing data from devices deployed worldwide. The company also uses Azure Functions for regional processing of sensor data stored in Azure Blob Storage. The two serverless environments interact via intermediary services like Azure Logic Apps or AWS EventBridge that facilitate communication between Amazon SNS and Azure Event Grid, ensuring real-time data processing across multiple clouds.