Fabric Architecture Podcast

Matthias Falland

Architecture decisions for Microsoft Fabric. Anonymized real customer scenarios, cost realism, counter-arguments included. Weekly episodes aligned with Fabric Friday recordings.

  1. ML Models in Fabric: Training, Deployment, and When to Stay on Azure ML

    May 29

    ML Models in Fabric: Training, Deployment, and When to Stay on Azure ML

    ML Models in Fabric: Training, Deployment, and When to Stay on Azure ML Episode 22 • 2026-05-29 Microsoft Fabric ships its own MLflow registry — but is it a replacement for Azure Machine Learning? Matthias and Fabia work through the four-layer registry model, PREDICT versus Model Endpoints, the Direct Lake prediction loop, and the architectural question that actually determines the answer: where do your predictions land? What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways Where do the predictions land. That question answers the architecture. OneLake plus Power BI Direct Lake — Fabric ML Model, genuinely the right call. REST API for an app — evaluate Endpoints maturity or route to Azure ML. GPU training,... I'd go further. Already on Databricks with Unity Catalog? Don't migrate. Fabric ML Model is not a migration target for Databricks shops — the platform maturity gap is real. The hybrid that actually works: train on Azure ML with GPU,... For Power BI shops — yes. PREDICT writes predictions to a Delta table in OneLake, Direct Lake reads it with zero copy, zero scheduled refresh. That eliminates an entire class of ETL work. But only if Power BI is your audience. Resources ML Experiment Notebooks Lakehouse Direct Lake Code-first AutoML Low-code AutoML SynapseML Activator Machine learning model in Microsoft Fabric What is Data Science in Microsoft Fabric? Tutorial Part 3: Train and register a machine learning model Tutorial Part 4: Perform batch scoring and save predictions Machine learning model scoring with PREDICT Serve real-time predictions with ML model endpoints (Preview) Train models with scikit-learn in Microsoft Fabric About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    10 min
  2. Event Schema Set: Contracts That Stop Midnight Breakage

    May 22

    Event Schema Set: Contracts That Stop Midnight Breakage

    Event Schema Set: Contracts That Stop Midnight Breakage Episode 21 • 2026-05-22 Event Schema Set is Fabric's contract layer for streaming data — but it ships in Preview with real gaps. Matthias and Fabia unpack the retrofit trap, the dead-letter gap everyone worries about, and when Confluent Schema Registry is honestly the better call. What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways Treat schemas as append-only contracts. Add fields with defaults — safe. Remove required fields — breaks consumers. Change a type — silent data corruption. Rename a field — silent loss in KQL queries. The system won't stop you. Your... Fair argument. And honestly? If you're an existing Kafka shop with established Confluent practices — use Confluent. The migration cost isn't worth it. Eventstream can deserialize Confluent-encoded payloads natively. You get Avro plus JSON... But you operate a separate cluster. Separate auth. Separate billing. If your entire stack is Fabric-native — Eventstream, Notebook, Activator, Eventhouse — the integration is a real win. No client library. No external cluster. Governance... Resources Schema Registry — known limitations CloudEvents 1.0 Use schemas in eventstreams Real-Time Hub Schemas Business Events Concepts Consume Business Events from Activator Eventhouse Confluent Kafka source Schema Registry in Fabric Real-Time Intelligence (preview) — Overview Create and manage event schema sets Create and manage event schemas in schema sets EventSchemaSet REST API definition Eventstream Overview — Schema Management section Multiple-Schema Inferencing in Eventstream (Preview) Eventstream Data Formats: JSON, CSV, Avro About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    11 min
  3. Data Activator: Stateful Alerts That Don't Spam Your Team

    May 15

    Data Activator: Stateful Alerts That Don't Spam Your Team

    Data Activator: Stateful Alerts That Don't Spam Your Team Episode 20 • 2026-05-15 Data Activator is Fabric's no-code event detection engine — but most teams build it wrong. Matthias and Fabia unpack the stateful rule model, the billing trap everyone hits once, and when Power Automate is actually the better answer. What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways Take-home: the entity hierarchy is the product. Fair. For low-frequency data — a daily KPI check — it works fine. Where it breaks: ten thousand events per second per rule. Power Automate isn't built for that volume. And a per-flow variable isn't per-object state — you'd need one flow... Right. Wrong in exactly one place — the state machine. Here's the thing. A stateless rule fires on every matching event. Value greater than twenty-five? Sensor reports every five seconds, stays above twenty-five for an hour — you get seven... Resources Add Activator to Eventstream Activator from KQL Queryset Activator from RTD Activator from Power BI Real-Time Hub Set Alerts Set Alerts on Anomaly Detection What is Fabric Activator? Tutorial: Create and activate a Fabric Activator rule Create a rule in Fabric Activator Trigger modeling in Activator Fabric Activator rules Detection conditions Activator Limitations Latency in Activator Activator Capacity Consumption About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    9 min
  4. Real-Time Dashboard: When 10-Second Refresh Changes the Architecture

    May 8

    Real-Time Dashboard: When 10-Second Refresh Changes the Architecture

    Real-Time Dashboard: When 10-Second Refresh Changes the Architecture Episode 19 • 2026-05-08 Real-Time Dashboard is not Power BI wearing a different hat. Matthias and Fabia unpack the naming collision, permission separation, Activator alert traps, and when you should actually use Power BI DirectQuery instead. What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways If someone asks 'what's happening right now' — Real-Time Dashboard. But you lose permission separation. You lose tile-as-query simplicity. And your team will absolutely blame the network when the DirectQuery report takes four seconds to load at scale. Different tools, different tradeoffs. Fair argument. Power BI can connect to KQL via DirectQuery. You get DAX measures, RLS, the full semantic model. And in Premium, automatic page refresh goes as low as five seconds. So if your team already lives in Power BI — that's a legitimate path. Resources KQL Database KQL Queryset Real-Time Hub Activator on RTD Anomaly Detection Power BI + KQL Fabric Map What is Real-Time Dashboard? Create a Real-Time Dashboard Real-Time Dashboard Permissions Use Parameters in Real-Time Dashboards Customize Real-Time Dashboard Visuals Activator Limitations Generate Real-Time Dashboard with Copilot Copilot-assisted Real-Time Data Exploration (Preview) About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    9 min
  5. Real-Time Hub: The Yellow Pages Your Streams Were Missing

    May 4

    Real-Time Hub: The Yellow Pages Your Streams Were Missing

    Real-Time Hub: The Yellow Pages Your Streams Were Missing Episode 18 • 2026-05-01 Matthias and Fabia unpack Fabric's Real-Time Hub — the tenant-wide catalog that sits above Eventstream, Eventhouse, and Activator. They tackle why it feels redundant until it doesn't, dig into a real Reddit question about skipping the Hub entirely, and lay out the four-layer real-time stack every architect should internalize. What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways So — today's lesson. The Hub is not a processing engine. It's not a new Eventstream. It's the inventory layer that streaming has always been missing. Pattern dictates platform — if your pattern is discovery at organizational scale, this is... I mean, fair question. If every stream you have lives in one workspace and one team owns them all — the Hub's discoverability value is close to zero. You already know what exists. Same if you're publishing streams to non-Fabric consumers... Right. And... that's actually fine for small setups. The connector list is identical — same Azure Event Hubs tile, same Kafka tile, same CDC tiles. Both paths end up creating an eventstream artifact. But here's the thing. Eventstream is... Resources managed private endpoint Eventstream Overview KQL Database Activator Overview Real-Time Dashboard Schema Sets Digital Twin Builder Real-Time Hub Overview Get Started with Real-Time Hub Supported Sources Add Azure Event Hubs Source Add Azure IoT Hub Source Get Azure Blob Storage Events Create Streams from Workspace Item Events Create Streams from OneLake Events About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    11 min
  6. KQL Queryset: Why Pipe-Forward Beats SQL for Time-Series

    May 1

    KQL Queryset: Why Pipe-Forward Beats SQL for Time-Series

    KQL Queryset: Why Pipe-Forward Beats SQL for Time-Series Episode 17 • 2026-04-24 Duration: 9:39 Matthias and Fabia explore the KQL Queryset in Microsoft Fabric — why the pipe-forward mental model beats SQL for time-series data, when to use make-series vs bin+summarize, and the architectural decision between KQL Queryset, Notebooks, and the SQL endpoint. What we discuss A real-world mistake from a pre-Fabric eraThe one question that reframes the architectural debateHow we got here — predecessor products and evolutionWhy the "obvious" answer is often wrongA real Reddit/Microsoft Q&A question unpackedThe concrete recommended architectureF-SKU realism — what this actually costsWhen the rejected approach is actually rightRisks of the recommended pathWhat Microsoft is shipping that changes the calculusThe architectural principle to take homeKey takeaways So — the lesson. Show me the query pattern. That's it. Don't pick your tool based on what you know. Pick it based on what the data needs. If you're doing time-series at scale, learn the pipe. It's worth it.I mean, fair question. If your workload is analytical reporting — quarterly trends, executive dashboards, scheduled refresh — Power BI connected through the SQL endpoint is probably the better path. You get a richer visualization library,...Right. And the naive answer is — just use the T-SQL endpoint, it supports SELECT statements. Which is true. But here's the thing. T-SQL on a KQL database is read-only DQL. SELECT only. No DDL, no management commands. And more importantly —...Resources Query data in a KQL querysetCreate a KQL querysetKusto Query Language overviewSQL to KQL cheat sheetKQL quick referencemake-series operatorseries_decompose_anomalies()Anomaly detection and forecastingTime series analysisrender operatorShare KQL queriesCreate a Real-Time DashboardReal-Time Intelligence tutorial part 5: Query streaming data using KQLTutorial: Learn common operatorsTutorial: Use aggregation functionsAbout the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    10 min
  7. KQL Database: Why Time-Series Data Needs Its Own Engine

    May 1

    KQL Database: Why Time-Series Data Needs Its Own Engine

    KQL Database: Why Time-Series Data Needs Its Own Engine Episode 16 • 2026-04-17 Duration: 10:26 Matthias and Fabia explore why KQL Database exists alongside four other analytical stores in Microsoft Fabric. They unpack the Eventhouse-as-building mental model, the caching vs retention trap, and when you should — and shouldn't — choose KQL over SQL. What we discuss A real-world mistake from a pre-Fabric eraThe one question that reframes the architectural debateHow we got here — predecessor products and evolutionWhy the "obvious" answer is often wrongA real Reddit/Microsoft Q&A question unpackedThe concrete recommended architectureF-SKU realism — what this actually costsWhen the rejected approach is actually rightRisks of the recommended pathWhat Microsoft is shipping that changes the calculusThe architectural principle to take homeKey takeaways If your data is time-series, logs, or telemetry — and your queries are always filtered by time — KQL Database isn't just an option.Fair. And honestly, if your team has strong Python skills and your latency tolerance is minutes, not milliseconds — Lakehouse plus notebooks is a legitimate path. You get the Spark ecosystem, ML libraries, broader tooling. I wouldn't fight...Right. And that matters for the reversal. Because the naive answer teams land on is: just put your IoT data in the Lakehouse. Delta Lake handles everything, right?Resources What is Real-Time Intelligence?Choose an analytical data store in Microsoft FabricEventhouse overviewData connectors overviewGet data overviewChange data policiesKQL overview - scalar data typesEventhouse and KQL Database consumptionPricing cost driversCreate a KQL databaseTime series analysisAnomaly detection and forecastingManage and monitor a databaseManage and monitor an eventhouseKQL Database git integrationAbout the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    10 min
  8. Eventstreams — When No-Code Streaming Hides the Failure Mode

    Apr 10

    Eventstreams — When No-Code Streaming Hides the Failure Mode

    Eventstreams — When No-Code Streaming Hides the Failure Mode Episode 15 • 2026-04-10 Duration: 8:03 Matthias and Fabia break down Fabric Eventstreams — the visual stream processor that replaces three Azure services with one canvas. They explore why green doesn't always mean flowing, tackle Kafka compatibility from a real Reddit question, and walk through the four billing meters that confuse every FinOps team. What we discuss A real-world mistake from a pre-Fabric era The one question that reframes the architectural debate How we got here — predecessor products and evolution Why the "obvious" answer is often wrong A real Reddit/Microsoft Q&A question unpacked The concrete recommended architecture F-SKU realism — what this actually costs When the rejected approach is actually right Risks of the recommended path What Microsoft is shipping that changes the calculus The architectural principle to take home Key takeaways Eventstreams are not about replacing Spark or Kafka. Fair. If you need stateful ML inference mid-stream, Eventstreams won't do it — route to a Spark Notebook destination instead. And if your team needs exactly-once semantics, at-least-once with deduplication in Eventhouse covers most cases,... And your team will absolutely say that in the sprint demo. Resources Eventstream Overview Add and manage event sources Route events to destinations Edit and publish an eventstream Route data streams based on content DeltaFlow output transformation Monitor the status and performance of an eventstream Pause and resume data streams Capacity consumption for Fabric eventstreams Add Azure Event Hubs source Add Azure IoT Hub source Add Eventhouse destination Add Lakehouse destination Process events with SQL code editor Explore and transform bike-sharing data About the show Built on ElevenLabs voice synthesis. Matthias — cloned voice. Fabia — designed AI co-host. See Matthias live on YouTube (Fabric Friday), at his meetups, and at conferences like FabCon. Hosted by Matthias Falland — Microsoft Data Platform MVP and community architect behind the Fabric Periodic Table. New episodes every Friday. Submit your case Have an architecture decision you are wrestling with? DM Matthias on LinkedIn — find him as Matthias Falland. Three to five sentences about the decision, your team size, and your current stack. We anonymize before airing. Built on ElevenLabs voice synthesis. Brand design based on fabricperiodictable.com.

    8 min
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Architecture decisions for Microsoft Fabric. Anonymized real customer scenarios, cost realism, counter-arguments included. Weekly episodes aligned with Fabric Friday recordings.

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