FaaSipõhistest

FaaSipõhistest, often translated as "function-as-a-service" (FaaS), refers to a cloud computing execution model where a cloud provider manages the servers and dynamically allocates resources to execute code in response to events. Developers write and deploy code without needing to provision or manage underlying infrastructure such as servers or operating systems. This abstraction allows for a focus purely on application logic.

The core principle of FaaS is the execution of discrete functions. These functions are triggered by various events, which can include HTTP requests, database changes, file uploads, or scheduled timers. When an event occurs, the FaaS platform automatically spins up the necessary resources to run the function, executes it, and then shuts down the resources. This on-demand nature leads to highly efficient resource utilization and cost savings, as users typically pay only for the compute time consumed.

Popular FaaS platforms include Amazon Web Services Lambda, Google Cloud Functions, and Microsoft Azure Functions. These services enable developers to build event-driven applications, microservices, and data processing pipelines. The benefits of FaaS include scalability, cost-effectiveness, and reduced operational overhead. However, it can also introduce challenges such as vendor lock-in, cold starts (initial latency when a function hasn't been run recently), and limitations on execution time and resource allocation. FaaS is a key component of serverless computing, a broader paradigm that emphasizes abstracting away infrastructure management.