Google ACE Deploying and Implementing a Cloud Solution Practice Question
A company wants to deploy a containerized application on Google Cloud that automatically scales to zero when not in use, and they want to minimize operational overhead. They also need to avoid managing any underlying infrastructure such as Kubernetes clusters or VMs. Which service should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cloud Run
Cloud Run is a fully managed serverless platform that can scale to zero when there is no traffic, and it abstracts away infrastructure management. GKE requires managing a cluster, Compute Engine involves managing VMs, and App Engine is also serverless but Cloud Run provides more flexibility with containers and also scales to zero.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Google Kubernetes Engine (GKE)
Why it's wrong here
GKE is a managed Kubernetes service that still requires you to manage a cluster of virtual machines. Even when your application has zero pods, the node pool VMs continue to run and incur costs, and the cluster autoscaler typically cannot shrink to zero nodes without custom configuration and control-plane overhead. You are also responsible for cluster upgrades, monitoring, and capacity planning, whereas Cloud Run abstracts all infrastructure away.
- ✗
App Engine Standard Environment
Why it's wrong here
App Engine Standard can scale to zero and is fully managed, but its runtime is sandboxed and language-specific, restricting the use of arbitrary container images. It supports containerized deployment only through a limited set of runtimes and does not give the same native, universal container experience as Cloud Run. Cloud Run is purpose-built to run any OCI-compliant container in a fully managed environment.
- ✓
Cloud Run
Why this is correct
Cloud Run is a fully managed serverless container platform that automatically scales in response to incoming requests, including scaling to zero when idle, so you only pay for the exact compute time consumed. It doesn't require any cluster or infrastructure management, and it can be used with Knative Serving APIs, making it the most direct fit for a stateless containerized application that needs to scale to zero.
- ✗
Compute Engine with managed instance groups
Why it's wrong here
Compute Engine managed instance groups operate at the virtual machine layer, where you must provision instance templates, health checks, and autoscaling policies. Even with an autoscaler configured, the minimum instance count is generally set to at least one to serve traffic, and scaling to zero would require a custom manual shutdown, contradicting the goal of automatic scale-to-zero behavior. VMs also incur baseline costs even when idle.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
Go deeper
Related to this question
Learn chapter
Google Cloud Platform Overview
Key term
App Engine
App Engine is a fully managed serverless platform from Google Cloud that lets developers build and deploy applications without worrying about the underlying infrastructure.
Key term
Anthos
Anthos is a Google Cloud platform that lets you run applications consistently across different computing environments, like on-premises data centers and multiple public clouds.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ACE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ACE exam.