WSO2
June 6, 2025
WSO2 Micro Integrator (MI) has long been a cornerstone for lightweight, robust enterprise integration. Built on the proven WSO2 Enterprise Integrator framework, MI empowers organizations to connect disparate systems, expose APIs, orchestrate workflows, and manage integration logic at scale.
With the release of WSO2 Micro Integrator 4.4, the platform makes a significant leap—not just in features, but in developer productivity, AI-driven extensibility, and future-proof runtime support. Whether you’re building new integration flows or managing complex API ecosystems, this release delivers enhancements designed to minimize friction, accelerate development, and boost reliability.
In This Blog
One of the standout improvements is the redesigned Visual Studio Code (VS Code) plugin. Developers now benefit from:
This update removes setup headaches and helps new users ramp up quickly, reducing time-to-value for integration teams.
Tedious environment setup is now a thing of the past. With version 4.4, WSO2 MI introduces one-click installation via the VS Code plugin, which:
This frictionless onboarding is ideal for both new developers and experienced teams frequently spinning up new environments.
A transformative addition in this release is the AI Agent Module, enabling intelligent behaviors within your integration workflows. Leveraging retrieval-augmented generation (RAG), developers can now embed AI-powered flows without leaving their familiar tools.
This bridges traditional integration with modern AI capabilities, enabling smarter data handling, dynamic decision-making, and contextual responses based on real-time data.
WSO2 MI 4.4 further accelerates development with enhanced low-code tooling:
These features let developers focus on business logic, not boilerplate code.
Expressions are core to integration logic. Version 4.4 introduces a brand-new expression editor that’s both simpler and more robust:
This reduces bugs and accelerates development cycles by making expressions easier to write, debug, and maintain.
Previously, mediator testing required deployment and runtime execution. Now, with the new “Try Mediator” feature, developers can:
This interactive testing is especially valuable for complex transformations and orchestrations, where rapid feedback is critical.
WSO2 MI 4.4 enhances out-of-the-box connectivity with:
Whether integrating RESTful services, legacy endpoints, or microservices, these updates make integration smoother and more scalable.
Enterprises benefit from the latest Java features for performance, security, and language enhancements. With full JDK 21 support, MI 4.4 ensures:
Extensive testing guarantees runtime stability, making this a safe and strategic upgrade for mission-critical deployments.
Beyond headline features, WSO2 MI 4.4 includes a range of refinements:
This release is about more than just features - it’s about empowering integration teams to be more productive and agile. WSO2 MI 4.4 aligns with modern development trends by:
Together, these improvements make WSO2 Micro Integrator more powerful, accessible, and scalable for enterprise integration.
WSO2 Micro Integrator 4.4 is a major step forward in enterprise integration - faster, smarter, and future-ready. From AI agent modules to real-time testing, streamlined expressions, and a refreshed VS Code developer experience, this release underscores WSO2’s commitment to innovation and developer empowerment.
For existing WSO2 users, upgrading to 4.4 is a strategic investment in agility and long-term sustainability. For those evaluating new integration platforms, WSO2 MI 4.4 stands out as a compelling, modern choice for building connected, intelligent digital ecosystems.