Which Google Cloud service is primarily intended for building and deploying applications in a serverless environment?

App Engine is a fully managed serverless platform that enables developers to build and deploy applications without having to manage the underlying infrastructure. It automatically handles various tasks such as server provisioning, load balancing, and scaling, allowing developers to focus primarily on writing code and developing features.

One of the key benefits of using App Engine is its ability to scale applications automatically in response to user traffic, making it ideal for applications with variable workloads. This serverless architecture allows developers to deploy their apps quickly and iterate rapidly without needing to configure or manage servers, which can be a significant advantage when time and resources are limited.

In contrast, other options like Cloud Functions and Google Kubernetes Engine serve different purposes. Cloud Functions is designed for running single-purpose functions in response to events rather than full-fledged applications, while Google Kubernetes Engine is focused on container orchestration, which requires users to manage the Kubernetes environment. Cloud Storage, on the other hand, is primarily a data storage service rather than an application deployment environment.