# Introduction

[EqualTo Sheets](https://sheets.equalto.com) provides spreadsheets as a service to developers. It's the quickest and easiest way to enhance a product or website with spreadsheet technology.

In summary, you can do the following in the EqualTo Sheets:

* Create a blank workbook.
* Import an existing XLSX workbook.
* Export a workbook to XLSX format.
* Embed a widget in a website or app, so that users can collaboratively edit spreadsheets.
* Create/read/update/delete workbook data using our REST and GraphQL APIs.
* Simulate “what if” scenarios using our REST API (“If cell `Sheet1!A1` is changed to `60`, what value is calculated in `Sheet1!D20`?”).

This documentation provides deatils on all of the above.


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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.