Serverless, aka Function as a Service or lambdas, is a new opportunity for deploying and running applications cheaply and at scale. But merging the mature PHP ecosystem and its frameworks with these new architectures and tools is not always a piece of cake! Can we run HTTP or CLI applications on lambdas? Does it work with Symfony? Laravel? PSR-15? This is how Bref started: let's have a look at how serverless architectures work and how to throw PHP and its frameworks into the mix.