How do I approach Product / Decision Making interview questions?

Product / Decision Making questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master product / decision making interviews.

What difficulty level is this interview question?

This is a medium difficulty Product / Decision Making question, commonly asked during Onsite rounds at Google.

What role is this question designed for?

This question is commonly asked for Product Manager candidates at Google during technical interviews.

Cross-Device Photo-Sharing App

Last updated: Mar 29, 2026

Quick Overview

This question evaluates product management competencies including product design, cross-device synchronization, user scenario definition, MVP scoping, and technical trade-off analysis across system architecture and scalability.

Google

Jul 4, 2025, 8:28 PM

Product Manager

Onsite

Product / Decision Making

Product Design: Cross-Device Photo Application

Design an application that lets users upload photos and seamlessly view, share, and download them across multiple devices.

Cover the following:

User scenarios and primary use cases.
MVP feature set (functional and non-functional requirements).
System architecture:
- Clients (mobile, web, desktop)
- Backend services and APIs
- Storage and data model
- Sync model across devices
Scalability considerations and trade-offs.

Solution

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