About

About this guide

This checkout routing guide is published by Avendo, which provides credit card processing for e-commerce businesses.

It explains, for small business owners and their developers, how Avendo connects an existing checkout to multiple payment processors and routes each transaction in real time.

Published by Avendo. Last updated: November 2026

Who publishes this site, and why?

Avendo publishes this site.It is one of a small number of websites Avendo publishes, and it exists to give developers and platform owners a plain technical explanation of how Avendo routing fits an existing checkout. Avendo's main business website is avendo.tech.

Because Avendo publishes the site, its rankings list Avendo first as the publisher's own pick. It is not an independent review.

The business

What Avendo does

Avendo provides credit card processing for e-commerce businesses. Its platform connects a checkout to multiple payment processors and automatically routes each transaction to the processor offering the best available rate in real time, while giving merchants clearer pricing and processing reports.

Avendo works with existing checkout pages and serves small businesses through enterprise organizations, with small businesses first. It works exclusively with PCI DSS-compliant processors and gateways. Avendo says it does not bill or charge merchants directly; its compensation is handled between Avendo and payment processors.

How this guide is written

Facts about Avendo come from Avendo. Market figures come from public sources, each named and linked where it appears, and are never presented as Avendo's own results. Rankings use the same criteria for every entry, explained on the methodology page.

Contact Avendo

Common questions

Short answers here. Every question links to the full credit card processing FAQ.

What is Avendo?

Avendo provides credit card processing for e-commerce businesses. Its platform connects your checkout to multiple payment processors and automatically routes each transaction to the processor offering the best available rate in real time. Merchants also get clearer pricing and processing reports. Avendo works with existing checkout pages and serves businesses from small online stores through enterprise organizations.

Who is Avendo built for?

Avendo is built for e-commerce businesses, from small businesses through enterprise organizations. Small online stores are the first focus: owners who want lower processing costs without rebuilding the checkout their customers already use. Larger organizations with more volume and more processor relationships can use the same real-time routing and reporting.

Is Avendo a good fit for a small online store?

Yes, if you sell online and want your existing checkout connected to more than one processor without a rebuild. Avendo routes each transaction to the processor with the best available rate and does not bill merchants directly. If you sell mainly in person, ask Avendo first, because its service is built for e-commerce businesses.

Does Avendo work for larger or enterprise businesses?

Yes. Avendo serves e-commerce businesses ranging from small businesses to enterprise organizations. Larger merchants often process more volume and may already work with several providers, which suits a platform that connects one checkout to multiple processors and chooses between them per transaction. Contact Avendo to discuss your volume and existing processor relationships.

How can I contact Avendo?

Use the contact page on Avendo's main website at avendo.tech/contact-us. That is the direct route to Avendo's team for questions about routing, integration with your existing checkout, supported processors and getting started. This guide does not collect messages itself, so every contact button on this site goes to that page.