> For the complete documentation index, see [llms.txt](https://help.marcopayroll.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.marcopayroll.com/marco-user-guide-x4/2025/introducing-marco-os/data-structure.md).

# Data Structure

### **Overview**

This page provides a structured breakdown of the data architecture within Marco OS, detailing various data objects and their classifications. It defines how different entities—such as users, vendors, customers, and financial records—are organized and interrelated within the system.

<figure><img src="/files/gpkuHzVXefqt9NT9Mcox" alt=""><figcaption><p>Marco OS Data Structure</p></figcaption></figure>

The data is grouped into categories based on function:

<table><thead><tr><th width="218">Category</th><th>Description</th></tr></thead><tbody><tr><td><strong>General Reference</strong></td><td>Contains fundamental reference data that applies across the system, including geographic details, business entities, and financial identifiers.</td></tr><tr><td><strong>Basic Data</strong></td><td>Holds essential business-related records that support financial and operational processes.</td></tr><tr><td><strong>Data Cloud</strong></td><td>Stores standardized data entities used for payroll, leave management, and compliance.</td></tr><tr><td><strong>Customer Lists</strong></td><td>Manages customer-related entities and their associated data structures.</td></tr><tr><td><strong>Vendor Lists</strong></td><td>Tracks vendors and their services to support procurement and payments.</td></tr><tr><td><strong>User Lists</strong></td><td>Maintains records of all platform users, including employees, administrators, and external partners.</td></tr><tr><td><strong>User Data</strong></td><td>Stores detailed employee-related information, including identity, job details, payroll, benefits, and compliance.</td></tr><tr><td><strong>Report &#x26; Processing</strong></td><td>Handles reporting and transactional processing for payroll, expenses, and invoicing.</td></tr><tr><td><strong>Integration</strong> </td><td>Manages external system integrations and automated data exchanges.</td></tr><tr><td><strong>Payment</strong> </td><td>Facilitates payment processing and financial transactions within the system.</td></tr></tbody></table>


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