Lambda Function

A lambda function is a serverless computing service that runs code in response to events or requests, without having to manage any servers. Lambda functions are used in cloud platforms like AWS, Google Cloud, and Azure. The code runs only when triggered, rather than being continuously running. This makes lambda functions useful for automating processes and scaling workloads that have variable traffic.

Lambda functions work by letting you upload your code to the cloud provider. The code can be written in languages like Node.js, Python, Java, and more. The cloud provider handles running the function when triggered, including provisioning compute resources on demand. For example, you could set up a lambda function that resizes images whenever they are uploaded to cloud storage. The function is triggered by the image upload and executes just to resize that image. You don't have to manage any servers - the cloud provider runs the code on demand. Lambda functions are useful for many automation tasks and can integrate with other cloud services. They allow you to focus on writing code rather than managing infrastructure.