Who actually works with whom

This is not an org chart — the Microsoft 365 directory contains no manager links, titles or departments at all. Instead, every internal email sent between January and July 2026 was read out of each mailbox's Sent Items, turned into a person → person edge, and the resulting network was fed to Louvain community detection. The teams below are the ones that fell out of the data: groups of people who genuinely talk to each other far more than to anyone else.

Every node is a person. Every line is a real working relationship — thicker means more email between them. Colour is the discovered team. Click anyone to see who they are, what they appear to do, and their closest collaborators. Drag to explore, scroll to zoom, and use the controls to focus a single team.

The teams the data found

Each row is a community the algorithm discovered. Purity is how much of the team shares one email domain — high purity means the team maps cleanly onto a brand; low purity means it's a genuinely cross-brand function (shared services, finance, IT).

Team names are derived from evidence, not assumed: each one is labelled from the words its members actually use in their own subject lines (team 8 writes digitize, left-chest, puff, patches, woven; team 13 writes past due, statement, credit hold).

Inside each team: the functions and who does what

Each team was split again — this time on the sub-graph of who emails whom inside it — and the resulting sub-groups were named, and every person given a role, from the evidence only: their own subject-line vocabulary plus their closest collaborators. Nobody's title was looked up, because no titles exist in the directory.

These are inferred, not authoritative. Each role carries a confidence. Treat high as a solid bet, medium as directionally right, and low as a guess from thin evidence (usually someone with very little email). Expect some to be wrong — they're a starting point for a conversation, not an HR record.

The connectors

These are the people whose email crosses team boundaries the most — the brokers who hold the company together. They are the highest-leverage people to talk to: they see how several teams actually work, and a tool that helps them ripples outward. Reach is how many distinct teams they email; External is the share of their traffic that leaves their own team.

Confidential. This page maps real employees and their communication patterns. It carries display names only — no email addresses, no message content, no subject lines. Treat the URL as sensitive.