System security

The cloud vendor is responsible for managing the security of the operating system, runtime, physical access, networking, and all related technologies that enable the platform to operate. The developer still needs to handle authentication, authorization, and code vulnerabilities, but the rest is outsourced to the cloud provider. It's a positive feature if you consider that a large team of specialists are focused on implementing the best security practices, and patching new bug fixes as soon as possible to serve their hundreds of customers. That's the definition of economy of scale.