> For the complete documentation index, see [llms.txt](https://sunbird.gitbook.io/sunbird-spark/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sunbird.gitbook.io/sunbird-spark/use/developer-guide.md).

# Developer Guide

Architecture diagrams, local development setup, web portal, mobile app, APIs, and configuration reference for developers building on or extending Spark.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>📐 <strong>Architecture diagram</strong></td><td>Component-level service map</td><td><a href="/sunbird-spark/use/developer-guide/architecture-component-diagram.md">Architecture - Component Diagram</a></td></tr><tr><td>💻 <strong>Local development</strong></td><td>Set up the full stack locally</td><td><a href="/sunbird-spark/use/developer-guide/local-development-guide.md">Local Development Guide</a></td></tr><tr><td>🌐 <strong>Web portal</strong></td><td>React frontend and Express backend guide</td><td><a href="/sunbird-spark/use/developer-guide/web-portal.md">Web Portal</a></td></tr><tr><td>📱 <strong>Mobile app</strong></td><td>Ionic + React Android app guide</td><td><a href="/sunbird-spark/use/developer-guide/sunbird-spark-mobile-app.md">Sunbird Spark Mobile App</a></td></tr><tr><td>🔌 <strong>APIs</strong></td><td>Core API endpoints reference</td><td><a href="/sunbird-spark/use/developer-guide/apis.md">APIs</a></td></tr><tr><td>⚙️ <strong>Configuration</strong></td><td>Environment variables and multi-tenancy</td><td><a href="/sunbird-spark/use/developer-guide/configuration-guide.md">Configuration Guide</a></td></tr></tbody></table>


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