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AWS Lambda, Amazon Lambda, AWS FaaS, Amazon FaaS, Amazon Function as a Service, AWS Function as a Service, Amazon Function as a Service (FaaS), AWS Function as a Service (FaaS), Amazon AWS Lambda Function as a Service (FaaS)

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AWS Lambda is a serverless computing service provided by AWS (Amazon Web Services). It allows users to run code without provisioning or managing servers, paying only for the compute time consumed by their functions. With AWS Lambda, users can upload their code in the form of functions and specify the triggers that should invoke these functions, such as HTTP requests, changes to data in Amazon S3, updates to database records in Amazon DynamoDB, or events from various AWS services. This enables developers to build scalable and event-driven applications with minimal operational overhead.

Several alternatives to AWS Lambda exist across various cloud service providers:

• 1. Azure: Azure Functions
• 2. GCP: Google Cloud Functions
• 3. IBM Cloud: IBM Cloud Functions
• 4. Oracle Cloud: Oracle Functions
• 5. Kubernetes: While not a direct alternative to serverless computing, Kubernetes can be used to deploy and manage containerized applications, including those that run functions in response to events. However, it requires more manual configuration and management compared to serverless platforms.

AWS Lambda offers a range of features and benefits for developers seeking to build and deploy serverless applications. It supports multiple programming languages, including Node.js, Python, Java, and Go, allowing developers to use their preferred language for writing functions. Lambda automatically scales the execution of functions in response to incoming requests or events, ensuring high availability and reliability without the need for manual intervention. Additionally, Lambda integrates seamlessly with other AWS services, enabling developers to build complex workflows and applications by chaining together multiple functions and services.

AWS Lambda is commonly used for various use cases, including real-time data processing, web and mobile backend services, IoT (Internet of Things) applications, and automation of tasks. Developers leverage Lambda to build event-driven architectures, where functions respond to events from different sources in near real-time. This enables organizations to build applications that scale automatically with demand and respond quickly to changes in workload. Whether it's processing data streams, handling API requests, or automating business processes, AWS Lambda offers a flexible and cost-effective platform for building serverless applications. ```

Snippet from Wikipedia: AWS Lambda

AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is designed to enable developers to run code without provisioning or managing servers. It executes code in response to events and automatically manages the computing resources required by that code. It was introduced on November 13, 2014.

Node.js, Python, Java, Go, Ruby, and C# (through .NET) are all officially supported as of 2018. In late 2018, custom runtime support was added to AWS Lambda.

AWS Lambda supports running native Linux executables by calling them from a supported runtime, such as Node.js. For example, Haskell code can be run on Lambda.

AWS Lambda was primarily designed for tasks such as handling image and object uploads to Amazon S3, updating DynamoDB tables, responding to website clicks and reacting to sensor readings from IoT connected devices. 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 by rounding up to the nearest millisecond with no minimum execution time.

AWS Lambda functions are often used in association with AWS SQS queues to process asynchronous tasks in distributed architectures.

In 2019, at the AWS annual cloud computing conference (AWS re:Invent), the AWS Lambda team announced "Provisioned Concurrency", a feature that "keeps functions initialized and hyper-ready to respond in double-digit milliseconds." The Lambda team described Provisioned Concurrency as "ideal for implementing interactive services, such as web and mobile backends, latency-sensitive microservices, or synchronous APIs."

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