Subscribe! -Messaging, Eventing, and Analytics

Subscribe E9/2026 - CNCF xRegistry

In this episode, Clemens introduces CNCF xRegistry (xregistry.io), explains how it evolved from CloudEvents work in the CNCF Serverless Working Group, and shows why teams need machine-readable metadata for events, schemas, and endpoints to build reliable event-driven systems. He walks through the core idea of an extensible, model-driven registry with consistent APIs, built-in versioning, and support for common formats and protocols, then highlights the surrounding tooling (server, CLI, code generator, and viewer). The episode closes with a practical look at how Microsoft Fabric uses xRegistry concepts to power typed event pipelines and schema-aware integration, and previews deeper dives in upcoming sessions.

Subscribe E8/2026 - CNCF CloudEvents

https://cloudevents.io In this episode of Subscribe, Clemens discusses CNCF CloudEvents, a protocol suite developed by the CNCF Serverless Working Group to provide a common metadata language for events. Developed by a collaborative group of up to 40 companies, CloudEvents establishes a layered standard that defines what an event is and provides consistent mechanisms for expressing those events across various applications, encodings, and transport options such as Kafka, HTTP, and MQTT. The standard addresses the challenges of modern, multi-hop architectures by ensuring that critical contextual information is retained as events move through IoT gateways, brokers, and analytics engines, thereby enabling infrastructure to effectively filter and route event traffic.

Subscribe E7/2026 - JSON Structure

In this episode of Subscribe, Clemens introduces JSON Structure, a pragmatic data definition language designed to address the architectural shortcomings of JSON Schema. Consisting of a core specification and six companion extensions, the project shifts focus from simple validation to robust structural modeling for programming languages and databases. Key features include a rich system of extended primitive types like 128-bit integers and UUIDs, first-class compound types such as sets, maps, and tuples, and a disciplined approach to type reuse through namespaces and strict $ref rules. By decoupling structural definition from pattern-based validation and introducing an explicit import model, JSON Structure provides a deterministic, tooling-friendly alternative for high-interoperability data interchange

Subscribe E6/2026 - Azure Stream Analytics and Fabric Event Streams

In this episode, the relationship and shared architecture between Azure Stream Analytics (ASA) and Microsoft Fabric Event Streams are explored, highlighting how both leverage the same underlying engine to process real-time data with millisecond latency. The session details how ASA functions as an event-driven engine for creating standing queries using a SQL-92 dialect or a no-code drag-and-drop interface to yield insights, aggregations, and enrichments on the "hot path" before data hits a database. It is further explained that Fabric Event Streams provides an opinionated, integrated experience that combines ASA and Event Hubs, offering an expanded set of connectors for CDC, external Kafka, and cloud platforms like AWS and GCP. The episode concludes by emphasizing that while Fabric simplifies the user experience, it retains the full power of ASA’s temporal windowing and developer tooling compatibility, making it a high-throughput foundation for modern real-time analytics.

Subscribe E5/2026 - Azure Event Grid

In this fifth episode, we explore Azure Event Grid, the versatile eventing backplane for Microsoft Azure and Microsoft Fabric. This episode details how Event Grid functions as a unified system combining a fully conformant MQTT 3.1.1 and 5.0 broker with a CloudEvents-based PubSub engine. We break down the technical differences between the Basic tier, which focuses on event-driven push delivery to targets like Azure Functions and Webhooks, and the Standard tier, which introduces namespaces, VNet support, and queue-like pull delivery. Whether you are managing IoT telemetry from hundreds of thousands of devices or building serverless architectures, you will learn how Event Grid handles complex routing, retry logic, and integration with Microsoft Fabric.