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    PracticeGCP Professional Cloud ArchitectGCP Professional Cloud Architect Practice Exam 7Question 29
    Medium1 markMultiple Choice
    Subtask 4.2: Business ProcessesFirebaseBuild vs BuyServerlessBusiness Process

    GCP PCA · Question 29 · Business Processes

    A startup is building a new mobile application. They need a backend to handle user authentication, store user profiles, and send push notifications. The engineering team consists of three frontend developers with no backend or infrastructure experience. The CEO wants the app launched in 2 months. Which approach should you recommend?

    Answer options:

    A.

    Build a Node.js backend on Cloud Run, use Cloud SQL for profiles, and integrate a third-party SMS API.

    B.

    Deploy a Kubernetes cluster (GKE) and install open-source identity and database operators.

    C.

    Use Firebase Authentication, Cloud Firestore, and Firebase Cloud Messaging.

    D.

    Provision Compute Engine VMs and install a LAMP stack to serve as the backend.

    How to approach this question

    Identify the 'Build vs Buy' scenario. A team with no backend skills needs a Backend-as-a-Service (BaaS) to launch quickly.

    Full Answer

    C.Use Firebase Authentication, Cloud Firestore, and Firebase Cloud Messaging.✓ Correct
    This is a classic 'Build vs. Buy' (or managed services) business decision. Given the constraints (no backend experience, tight 2-month deadline), building custom infrastructure is the wrong choice. Firebase provides fully managed authentication, NoSQL database (Firestore), and messaging (FCM) that frontend developers can use directly, accelerating time-to-market.

    Common mistakes

    Choosing Cloud Run (Option A). While serverless, it still requires writing and maintaining backend code, which the team lacks the skills for.
    Question 28All questionsQuestion 30

    Practice the full GCP Professional Cloud Architect Practice Exam 7

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