> ## Documentation Index
> Fetch the complete documentation index at: https://docs.layerfi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

Once you have onboarded one of your customers to Layer by creating a [Business](/api-reference/business/business), you can start importing their revenue data into Layer.

Layer ingests revenue through [Invoices & Payments](/guides/importing-invoices) and [Payouts](/guides/importing-payouts). This includes in-person sales made through a point of sale system, invoices sent through your software, ecommerce sales, and any other type of accounts receivable activity.

For a complete accounting picture, you will also need to import your customers' [banking data](/guides/importing-banking-data-overview).