Notion vs Obsidian for Team Docs: Key Tradeoffs Engineers Should Know

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A hands-on comparison of Notion and Obsidian reveals that both tools work well for individual note-taking but diverge sharply when used by engineering teams at scale. Notion, built on a cloud-hosted database, offers native real-time collaboration, granular access controls, and workspace-wide search, but can suffer from performance slowdowns, permission sprawl, and high lock-in risk due to lossy data exports. Obsidian, a local Markdown editor built on plain files, excels in speed, offline access, Git compatibility, and data ownership, but lacks native multiplayer editing and pushes concurrency issues onto whichever sync layer a team chooses. The author draws on direct experience running Notion for a roughly 30-person product org and Obsidian via Git for smaller infrastructure-heavy teams to illustrate predictable failure modes for each. Ultimately, the choice comes down to whether a team wants its source of truth stored in a third-party cloud database or on its own disk.

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