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|Initial release||November 2014|
AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of the Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code. It was introduced in November 2014.
The purpose of Lambda, as compared to AWS EC2, is to simplify building smaller, on-demand applications that are responsive to events and new information. AWS targets starting a Lambda instance within milliseconds of an event. Node.js, Python, Java, Go and C# through .NET Core are all officially supported as of 2016[update], and other languages can be supported via call-outs. However, some runtimes, such as the Java Virtual Machine, may be slower than others to start.
AWS Lambda was designed for use cases such as image or objects uploads to Amazon S3, updates to DynamoDB tables, responding to website clicks or reacting to sensor readings from an IoT connected device. AWS Lambda can also be used to automatically provision back-end services triggered by custom HTTP requests, and "spin down" such services when not in use, to save resources. These custom HTTP requests are configured in AWS API Gateway, which can also handle authentication and authorization in conjunction with AWS Cognito.
Unlike Amazon EC2, which is priced by the hour but metered by the second, AWS Lambda is metered in increments of 100 milliseconds. Usage amounts below a documented threshold fall within the AWS Lambda free tier - which does not expire 12 months after account signup, unlike the free tier for some AWS services.
- Event-driven architecture
- Serverless Framework
- Lambda function, the concept of an anonymous computing function, not bound to an identity, which gives Amazon Lambda its name
- Oracle Cloud Fn
- Google Cloud Functions
- SLAppForge Sigma IDE for Serverless computing
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