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Building cloud-native applications on Azure requires more than picking services — it requires architecting them well and shipping with confidence. Whether you're migrating, modernising, or starting from scratch, we can help.

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Azure offers a vast array of services; the challenge lies in choosing the right ones and architecting them well. We help you migrate, modernise, scale and optimise with confidence.

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APIs are the foundation of the AI-driven enterprise; exposing data, algorithms and AI models to customers, partners and copilots. We help you design, govern and monetise APIs that create lasting value.

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Struggling to modernise apps or build cloud-native solutions from scratch? Our development expertise in .NET, Python, TypeScript, Azure and DevOps accelerates your delivery.

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Reactive Programming

In the Cloud Native era, apps are complex, interconnected & data driven. Reactive programming is a useful paradigm for any system that has to deal with things happening, and solves the problem of extracting intelligent signals from the noise of modern data volumes.

Reactive Extensions for .NET was created in 2008 by the Cloud Programmability team at Microsoft, for a Cloud Native future, which has now arrived

The System.Reactive NuGet package has been downloaded over 150 million times, and is used by Visual Studio, .NET Interactive and ReactiveUI.

Since 2023, the Open Source project has been maintained by endjin.

GitHub Repo

Reactive programming provides clarity when our code needs to respond to events. The Rx.NET libraries were designed to enable cloud-native applications to process live data in reliable, predictable ways.

We've written a FREE book which explains the vital abstractions that underpin Rx, and shows how to exploit the powerful and extensive functionality built into the Rx.NET libraries.

introtorx.com

Reaqtor evolves Rx.NET by adding state & durability primitives to enable long running queries, for processing live or historic data streams. Reaqtor is used by Bing, MSN, and M365 to handle billions of standing stateful queries, processing thousands of events per second.

We spent 5 years collaborating with Microsoft to Open Source Reaqtor under the .NET Foundation and become the project maintainers.

reaqtive.net

We share the value we create.

We help our customers succeed by leveraging our Intellectual Property.

"Past Us" created value so that "Future Us" could benefit, and work smarter; constantly focusing on delivering real business value rather than reinventing the wheel, to scratch a technical itch. You can benefit from our efforts too.

Endjin on GitHub

Cloud Native blogs

#azure #dotnet #devops All posts
AsyncAPI Code Generation with Corvus: Durability and Resumption

AsyncAPI Code Generation with Corvus: Durability and Resumption

Matthew Adams

Configure durable message delivery for Corvus-generated AsyncAPI consumers - Kafka consumer groups, AMQP acknowledgement, NATS JetStream, MQTT persistent sessions, and Azure Service Bus PeekLock settlement.
AsyncAPI Code Generation with Corvus: Health and Telemetry

AsyncAPI Code Generation with Corvus: Health and Telemetry

Matthew Adams

Add observability to Corvus-generated AsyncAPI producers and consumers - OpenTelemetry distributed tracing, message throughput metrics, processing loop heartbeats, and ASP.NET Core health checks for transport connectivity.
AsyncAPI Code Generation with Corvus: Request/Reply

AsyncAPI Code Generation with Corvus: Request/Reply

Matthew Adams

Generate typed request/reply methods from AsyncAPI specs with Corvus - correlated messaging with zero-allocation correlation IDs, typed response payloads, timeout management, and support for both AsyncAPI 3.0 reply objects and 2.6 x-corvus-reply extensions.
AsyncAPI Code Generation with Corvus: Typed Consumers

AsyncAPI Code Generation with Corvus: Typed Consumers

Matthew Adams

Generate typed message consumers from AsyncAPI specs with Corvus - handler interfaces with pre-validated payloads, configurable error policies, dead-letter routing, and Polly resilience middleware.
AsyncAPI Code Generation with Corvus: Typed Producers

AsyncAPI Code Generation with Corvus: Typed Producers

Matthew Adams

Generate strongly-typed message producers from AsyncAPI specs using the Corvus CLI - validated payloads, channel address templates, and pluggable transports for NATS, Kafka, AMQP, MQTT, and Azure Service Bus.
OpenAPI Code Generation with Corvus: Testing

OpenAPI Code Generation with Corvus: Testing

Matthew Adams

Test Corvus-generated OpenAPI code at every level - unit test handler logic in isolation with typed params, integration test the full round-trip with WebApplicationFactory, and verify client behaviour with in-memory transports.

But don’t just take our word for it.

We pride ourselves on our customer relationships. Here's what they had to say about us.

I asked our Cloud Solutions Architect from Microsoft to recommend a lean, hands-on & opinionated firm to walk with us & challenge us on our Azure journey. He recommended endjin & they were great.

Endjin had the experience to build our cloud strategy, to take Watchfinder global.

With a rapidly growing market share for our SaaS NEC Contract Management Tool, we increased R&D investment and focused on reviewing our principle architecture. Endjin assisted in re-modelling strategic elements of our technical roadmap in parallel to streamlining our DevOps procedures, providing future readiness, increased efficiency, to support our exit to the thinkproject group.

When we selected Microsoft Azure to run business critical, client facing web applications in the financial services sector, endjin provided us with the day-to-day in-depth expertise we needed to keep our software & hosting environment relevant, reliable & robust.

Endjin helped us step into the modern era. We've gone from worrying about operating servers, to focusing our efforts on being Fintech innovators.

Endjin helped us to find the performance bottlenecks in our WPF based application running on XenApp clusters. They quickly identified bottlenecks and suggested changes to mitigate the issues. Endjin upskilled our team so we can now do the analysis and optimisation ourselves. Endjin delivered beyond our expectations.

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