Product design question

How would you design a messaging platform for Notion?

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Tests product design for adding a new capability to an existing workspace tool, balancing new value against feature bloat.

Clarify the job to be done: real-time discussion around a doc, or a general team chat channel, since Notion already links to Slack for the latter.
Segment users into small teams without a dedicated chat tool and larger teams who already use Slack or Teams alongside Notion.
Identify the pain point: conversations about a doc happen in comments or outside Notion entirely, fragmenting context.
Design the feature as page-anchored threads and a lightweight team inbox, not a full standalone chat app competing with Slack.
Prioritize integration with existing comments and mentions over building new chat infrastructure from scratch.
Define success as reduced context-switching, measured by time spent in Notion during active discussions.

Scopes the feature narrowly around documents instead of trying to out-build Slack, which plays to Notion's actual strength.
Distinguishes small teams, who'd adopt it as their only chat tool, from large teams, who'd use it alongside existing chat.
Uses illustrative numbers as assumptions: assume 20% of small-team workspaces have no dedicated chat tool today.
Flags the risk of feature bloat and notification fatigue if chat competes with Notion's core writing experience.

Designing a full Slack competitor instead of something anchored to documents.
Ignoring that Notion already has a Slack integration this would need to coexist with.
Not addressing notification design, which determines whether users tolerate a new channel.

Chapters of the AI PM course that teach what this question tests.