Overview

Document the microkernel (plug-in) architecture pattern — where a minimal core system is extended by separately deployable plug-in components — with this reference diagram template. Ideal for engineering teams building extensible platforms, IDEs, or enterprise software requiring modular feature deployment.

Key Features

• Core kernel component block with plug-in registry
• Individual plug-in module zones with interface definitions
• Communication layer between core and plug-ins
• Extension point annotations
• Deployment boundary indicators

How to Use

1. Define the core kernel in the central block — add its responsibilities using the Text tool
2. Add plug-in module blocks around the core using the Shapes tool — label each with its name and function
3. Draw communication arrows from the core to each plug-in using the Connector tool — annotate with interface or API name
4. Mark extension points on the core block where plug-ins hook in using sticky note callouts
5. Use Comments for async team review of the architecture design

Benefits

Microkernel architectures need explicit documentation because the extension points are invisible in the code. This diagram makes the plug-in system legible to every engineer before they try to extend it.