Application analytics fails quietly when every squad invents its own verb for the same user action. The charts still render; the comparisons do not.
A living dictionary — names, properties, owners, and retirement notes — is the cheapest way to keep historical trends readable after the next launch wave.
Start with the ten events that feed activation and revenue questions. Ignore vanity clicks until those ten are stable and dual-written through any rename.
In Gwangju and Seoul teams alike, the pattern holds: dictionary first, dashboard second.