[meekins]

Security, ability to outsource pretty much everything ops-related besides cloud resource provisioning and deployments to the cloud provider and developer focus on business logic.

I don't know a better dev environment than a (possibly scaled down) personal replica of production environment in the cloud. With proper tooling (e.g. Serverless Stack or SAM) you can achieve very fast code updates so the old argument of slow feedback due to having to deploy changes to the cloud on each iteration is getting less and less true as well.

With more traditional models already keeping your OS, possible container images, web server and any other middleware secure and up-to-date is pretty expensive if you want to do it properly.

Going all-in on serverless might not make much sense for a large software product company but when building bespoke business software it allows small teams to do wonderful things very cost-effectively.