If you're an Atlassian shop, Confluence is probably already your system of record, and you've likely got a decision-log or ADR space in there. This compares how Confluence holds up for engineering decisions versus a decision graph like Align, and why the two work well together.
Plenty of teams start their decision log as a Notion database. It's a reasonable first move, and for a small team it can be enough. This is an honest look at where a Notion decision log works, where it breaks, and when a decision graph like Align is the better fit.
A decision log is a record of the significant choices your team makes: what was decided, why, who was involved, and what changed later. The idea is old and sound. The hard part has always been keeping the log current without it becoming a chore nobody does.
This is a look at how teams track decisions today, where each approach falls down, and what to look for if you're evaluating decision tracking software.
Your AI agents have most of the inputs they need. They can read the codebase, the tests, the types, the git history, the open PRs. All of that is deterministic and right there.
What they can't see is why. Why the retry count is three and not five. Why this service owns that table. Why the team walked back the obvious approach six weeks ago. That reasoning lives in a Slack thread, a meeting nobody recorded, a Jira comment, or someone's head. The agent never sees it, so it ships code against decisions it doesn't know exist.
Most of your team's real decisions don't happen in a doc. They happen in Slack. Two engineers are debating a bug, a third jumps in, someone says "ok let's go with option 1," and that's it. The decision is made. Then the thread scrolls away and the reasoning goes with it.
A few weeks later someone asks "wait, why does this work this way?" and nobody can find the answer. It's in Slack somewhere. Good luck.
An architecture decision record (ADR) is a short document that captures one significant decision: what you decided, why, what you considered, and what it costs you later. One decision per file. Plain text, in the repo, next to the code it governs.
That's the whole idea. The reason ADRs are having a comeback in 2026 isn't nostalgia. It's that AI coding agents now write a lot of your code, and an agent that can't see why something was built a certain way will happily refactor the reason away.