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Serverless computing with AWS Lambda

Serverless computing means that you can build web, mobile, and IoT solutions, run chatbots, without the need for provisioning and managing servers. AWS Lambda is a serverless computing service offered by the Amazon Web Services platform. AWS Lambda lets you to upload code that will be run on an on-demand container managed by Amazon. AWS Lambda will achieve the provisioning and managing of servers to run the code, so all that is needed from the user is a packed set of code to run and some limited configuration decisions to define the framework in which the server runs.

AWS Lambda Pricing

For AWS Lambda, you pay only for what you use. You are charged based on the number of requests for your functions and the duration, the time it takes for your code to execute. Users of Lambda are charged $0.0000002 per request for the total number of requests across all your functions. The price depends on the amount of memory you allocate to your function. The Lambda free tier includes 1M free requests per month and 400,000 GB-seconds of compute time per month.

(Source: Price details according to Amazon – Lambda Official web site.)

Supported languages

Java, Go, PowerShell, Node.js, C#, Python, and Ruby are all supported.

AWS Lambda Architecture

Lambda will be triggered if certain event occurs. Events can be whatsoever, actually. For a lambda functions to execute, an event must happen. Lambda can’t trigger alternative Lambda directly. To be able to join two Lambdas together, what is required, is to make the first Lambda generate an event that the second Lambda will understand in order to be triggered.
Following are some of the examples of Lambda triggers.
• API Gateway event is one way to trigger Lambda.
• Alexa Skills Kit allows you to create Alexa voice-activate skills.
• DynamoDB calls your function when data is inserted into a DynamoDB table.
• CloudWatch Events calls your function when a CloudWatch event or alert occurs.
• S3 events occur when someone modifies the content of an S3 bucket.

Serverless computing has the potential to totally change the way businesses plan, architect, build, deploy, and improve applications, greatly dropping management overhead, and allowing massive scale. Nub8 is an Amazon AWS Consulting leader that offers end-to-end services on AWS which allows you make your business critical applications equipped for the cloud with exceptional focus on AWS Lambda. We support your cloud transformation via AWS Lambda with a squad of AWS-highly competent experts providing tailored solution guidance and state of art architecture.

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