> For the complete documentation index, see [llms.txt](https://docs.coherent.global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherent.global/readme.md).

# Welcome

Convert governed Excel models into high-performance APIs. Power pricing, underwriting, finance, and AI systems without rewrites or recoding bottlenecks. Move faster and reduce risk across existing platforms.

## Start here!

<table data-view="cards" data-full-width="false"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Tutorial: Get started in 5 minutes</strong></td><td>Go from Excel to API in 5 minutes!</td><td></td><td><a href="/tutorial-get-started-in-5-minutes.md">Tutorial: Get started in 5 minutes</a></td></tr><tr><td><strong>How to: Set up a Spark tenant</strong></td><td><code>tenant-admin</code> users should start here!</td><td></td><td><a href="/tenant-administration/how-to-set-up-a-spark-tenant.md">How to: Set up a Spark tenant</a></td></tr><tr><td><strong>Navigation</strong></td><td>Take a detailed look through the Spark user interface and features.</td><td></td><td><a href="/navigation.md">Navigation</a></td></tr></tbody></table>

## Popular pages

<table data-view="cards" data-full-width="false"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>How to: Prepare an Excel file for Spark</strong></td><td>Optimize your Excel files for better performance.</td><td><a href="/build-spark-services/how-to-prepare-an-excel-file-for-spark.md">How to: Prepare an Excel file for Spark</a></td></tr><tr><td><strong>Tutorial: Map inputs and outputs</strong></td><td>A step-by-step guide to input and output mappings.</td><td><a href="/build-spark-services/tutorial-map-inputs-and-outputs.md">Tutorial: Map inputs and outputs</a></td></tr><tr><td><strong>How to: Create a Spark service</strong></td><td>Make an Excel file into a Spark service.</td><td><a href="/build-spark-services/how-to-create-a-spark-service.md">How to: Create a Spark service</a></td></tr><tr><td><strong>Call Spark services as functions (<code>Xcall</code>)</strong></td><td>Any Spark service can become a function that can be called from any other Spark service. </td><td><a href="/build-spark-services/additional-mappings/call-spark-services-as-functions-xcall.md">Call Spark services as functions (Xcall)</a></td></tr><tr><td><strong>Execute API</strong></td><td>Documentation for our <code>/execute</code> calculation API.</td><td><a href="/spark-apis/execute-api.md">Execute API</a></td></tr><tr><td><strong>Hybrid runner</strong></td><td>Deploy your Spark services on-premises!</td><td><a href="/hybrid-runner/introduction-to-the-hybrid-runner.md">Hybrid runner</a></td></tr></tbody></table>