The Twelve Days of AWS: Lambda
When I needed to perform small operations on files stored in S3, I turned to this next tool in the AWS arsenal, Lambda. Lambda is effectively a ‘serverless’ script running platform, whereas of the time of writing, code in Node.js, Python, Java, Ruby, Go, C# or PowerShell will be run whenever triggered by specific events. A few examples of these events are: S3 Object uploaded, Amazon Alexa, and Manual trigger via the Lambda UI.