The possibility of executing functions as a service allows designing scalable and highly parallel applications, but on the other hand, this kind of applications require a particular programming style. For example, bundling dependencies and managing state is not trivial.
However, there are plenty of tools and frameworks to help you code serverless applications with Python, and once you get started it is not complicated. In this talk I will cover AWS Lambda and other alternatives as IronFunctions, OpenFaaS, Fission...
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