Yes and no: Lambdas (and cloud functions) are to the cloud what Triggers are to Databases. They're very useful to react to events; but they also impose a lock-

Yes and no: Lambdas (and cloud functions) are to the cloud what Triggers are to Databases. They're very useful to react to events; but they also impose a lock-in. For (very) light usage I feel they're ok. But this is an opinionated feeling. If you want to process a lot of stuff, you need one (or several) instances. If you take a close look at other 'serverless' offerings like KNative in K8s. They do something similar to launching daemon processes but they do launch pods and containers. If you already have K8s, it could be very useful. If not, use a message queue and instances.