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      Question

      What does 'serverless computing' mean in cloud

      architecture?
      A Computing performed without any physical servers in a purely virtual form Correct Answer Incorrect Answer
      B A disaster recovery model where servers are kept offline until needed Correct Answer Incorrect Answer
      C A model where servers are shared between multiple companies with no dedicated resources Correct Answer Incorrect Answer
      D Computing performed entirely on client-side browsers with no server involvement Correct Answer Incorrect Answer
      E A cloud execution model where the cloud provider dynamically manages server provisioning Correct Answer Incorrect Answer

      Solution

      In serverless (FaaS — Function as a Service), developers write stateless functions triggered by events (HTTP requests, database changes, file uploads). The cloud provider (AWS Lambda, Azure Functions, Google Cloud Functions) handles all infrastructure — provisioning, scaling, patching. Billing is per invocation and execution duration (millisecond precision). Use cases in banking: fraud detection triggers, transaction notification functions, scheduled report generation, API backend processing. No idle costs are incurred.

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