# What the Meta data pipeline

1. Blizzard's public Mythic+ leaderboard data is collected from top-ranked runs by dungeon, region, and period.
2. Runs are normalized and de-duplicated across connected realms, then stored as raw observations.
3. Percentile brackets and rollups calculate spec usage, group-composition usage, dungeon results, trends, and diversity measures.
4. Current-period ingest runs roughly every two hours. A period is finalized after it closes with a wider sample.
5. AI features consume those stored rollups. They do not invent a separate ranking dataset and are visibly labeled as interpretation.

The live pipeline page shows operational status. For a data answer, prefer the coverage state shown on the relevant analytics page: open/current-period data is provisional; finalized data is the historical record.