Graph & Governance: OptiMind SLMs, new JSON Structure & Entra + Purview | EP28

Episode 28 is hosted by David Rowley and Cyrus Irandoust (Richard isn’t with us this episode). This week we dig into: • Microsoft Graph: a key update for Microsoft 365 admins—Graph-based Message Trace (what it unlocks and why it matters). • OptiMind: a small language model built for optimization—teasing why “solver-ready” formulations are the real bottleneck (and how SLMs can help). • JSON Structure: Clemens Vasters’ proposal for a more deterministic “schema-like” way to define JSON structures (and why it’s sparking debate). • Entra + Purview: Cyrus connects the dots across identity, data security, and the network layer—where policy becomes more actionable and less dashboard-driven. BLOG https://themicrosoftcloudblog.com SUBSCRIBE    / @cloudywithachanceofinsights   SOCIALS X.Twitter: https://x.com/richardihogan Bluesky: https://bsky.app/profile/richardihoga... LinkedIn:   / richardhogan   Facebook: https://www.facebook.com/profile.php?... Threads: https://www.threads.com/@richardhogan323 CHAPTERS 00:00 Introduction 01:03 Entra + Purview updates 14:29 Microsoft Graph announcement 17:54 OptiMind: SLMs with optimization 22:07 JSON Structure: a new proposal 26:08 Wrap-up LINKS Microsoft Graph / M365 • Graph-based message trace API onboarding guide (Microsoft Learn): https://learn.microsoft.com/en-us/exc... • Microsoft Graph “List messageTraces” (beta): https://learn.microsoft.com/en-us/gra... • exchangeMessageTrace resource type (beta): https://learn.microsoft.com/en-us/gra... OptiMind (Microsoft Research / Azure AI Foundry) • Microsoft Research blog: OptiMind — a small language model with optimization expertise: https://www.microsoft.com/en-us/resea... • Azure AI Foundry blog (TechCommunity): OptiMind overview + availability: https://techcommunity.microsoft.com/b... JSON Structure / “New JSON Schema” discussion • Clemens Vasters: A thought experiment — “New JSON Schema”: https://vasters.com/clemens/2025/02/1... • IETF draft: JSON Structure — Core: https://www.ietf.org/archive/id/draft... • GitHub: JSON Structure validation specification: https://github.com/json-structure/val... Entra + Purview • Purview: Data Security Posture Agent (public preview) — Message Center archive: https://mc.merill.net/message/MC1217155 • Purview: DLP + Information Protection diagnostics — Message Center archive: https://mc.merill.net/message/MC1219791 • Purview eDiscovery: Content Search case changes (review sets & case-level sources removed) — Message Center archive: https://mc.merill.net/message/MC1216266 • Purview eDiscovery: direct export packages expire after 14 days — Message Center archive: https://mc.merill.net/message/MC1217141 • Purview eDiscovery (Premium): Advanced review set explorer (KQL) — Message Center archive: https://mc.merill.net/message/MC1221453 • Entra PowerShell: v1.2.0 announcement (Agent Identity Blueprints support): https://devblogs.microsoft.com/entrap... • Entra: Conditional Access for agent identities (limitations & token-flow checkpoints): https://techcommunity.microsoft.com/b... • Authenticator: jailbreak/root detection changes (Support article): https://support.microsoft.com/en-gb/a... • Global Secure Access: create file policies for network content filtering (files + TLS inspection): https://learn.microsoft.com/en-us/ent... • Global Secure Access: TLS inspection (required for deep inspection scenarios): https://learn.microsoft.com/en-us/ent... • Global Secure Access: Prompt Shield (preview): https://learn.microsoft.com/en-us/ent...