For now, when adopting FaaS, you must be vigilant to adopt rigorous monitoring and alerting for how your system is behaving so that you can detect situations an

For now, when adopting FaaS, you must be vigilant to adopt rigorous monitoring and alerting for how your system is behaving so that you can detect situations and correct them before they become significant problems. Of course, the complexity introduced by monitoring flies somewhat in the face of the simplicity of deploying to FaaS, which is friction that your developers must overcome. - Designing Distributed Systems by Brendan Burns