Medallion + Direct Lake — Real‑Time BI

Direct Lake reads Gold tables directly from OneLake — no refresh, no duplication, no latency.

Benefits

• No refresh cycles
• No data duplication
• Real‑time dashboards
• Lower storage cost
• Higher performance

Requirements for Direct Lake

• Gold tables must be Delta
• Gold tables must be optimized
• Gold tables must be partitioned
• Gold tables must be business‑ready

Medallion + Direct Lake = real‑time enterprise BI.

Medallion Governance — Purview Integration

Purview governs each layer differently:

Bronze

• Classified as raw
• Lower sensitivity
• Broad access

Silver

• Classified as cleaned
• Medium sensitivity
• Controlled access

Gold

• Classified as business‑critical
• High sensitivity
• Strict access

Governance becomes structured and predictable across every layer.