For developers and platform owners

Adding Avendo to an existing checkout

Avendo is added behind the checkout you already run, so developers connect routing to multiple processors without rebuilding the customer payment page.

This guide is for the developer, agency or platform owner who looks after a small store's checkout. It covers what to gather before talking to Avendo, the questions to settle, and how PCI DSS responsibilities are shared. Avendo confirms the exact connection steps for each platform.

Last updated: November 2026

Can I add payment routing without rebuilding my checkout?

Yes. Avendo works with existing checkout pages, connecting them to multiple payment processors and routing each transaction in real time. The customer-facing page stays the one your shoppers know. What your developer connects depends on your platform, and Avendo confirms that detail directly.

Definition

Where Avendo sits in the payment stack

In a typical online store, the checkout collects card details and hands the payment to one gateway and processor. Avendo adds a routing layer between the checkout and several PCI DSS-compliant processors and gateways. For each sale, Avendo picks the processor offering the best available rate in real time.

For developers, that means the work is about connecting the existing checkout to Avendo and confirming which processors sit behind it, not about designing a new payment page. For platform owners, it means one checkout can draw on multiple processors, with Avendo's pricing and processing reports showing where each transaction went.

What to gather before contacting Avendo

The e-commerce platform and checkout your store runs on today
Every payment processor and gateway currently connected
Your approximate monthly card volume and typical order sizes
Who owns the checkout code: your team, an agency, or the platform
Where your current processing statements and reports live
Any processor contracts with notice periods or minimums

Questions to settle before go-live

Which of my processors can stay connected?

Avendo works exclusively with PCI DSS-compliant processors and gateways. Ask Avendo which of your current providers fit that list.

What touches my checkout code?

Avendo works with existing checkout pages. Confirm with Avendo exactly what your developer needs to connect for your platform.

How do I read costs after launch?

Avendo provides clearer pricing and processing reports. Ask to see what the reports show so finance knows what to expect.

Who bills us?

Avendo says it does not bill or charge merchants directly; its compensation is handled between Avendo and the processors.

How is PCI DSS handled when you route payments?

Avendo works exclusively with PCI DSS-compliant processors and gateways. Your store still has its own obligations under the Payment Card Industry Data Security Standard, which is maintained by the PCI Security Standards Council. The table shows the split in plain terms.

PCI DSS responsibilities when a store uses Avendo routing. Published by Avendo. Confirm your own obligations with your processors.
Party	What to know
Avendo	Works exclusively with PCI DSS-compliant processors and gateways
Processors and gateways	Must be PCI DSS-compliant to be part of Avendo routing
Your store	Keeps its own PCI DSS responsibilities for its site and checkout

Security matters for small stores: Stripe cites that 41% of US small businesses experienced a cyberattack in 2023.

Ready to talk about your checkout?

Bring the checklist above to Avendo and ask which processors and platforms fit your setup. To understand the transaction flow first, read how real-time payment routing works, or return to the online credit card processing for small business guide.

Contact Avendo

Common questions

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

Do I have to rebuild my checkout to use Avendo?

No. Avendo says its platform works with existing checkout pages, so your store keeps the checkout its customers already use. The integration connects that checkout to multiple processors behind the scenes. Your developer should still confirm with Avendo how it fits your specific e-commerce platform and checkout setup before going live.

What should a developer prepare before integrating Avendo?

Prepare a short inventory: the e-commerce platform and checkout you run, the processors and gateways you use today, your monthly card volume and average order size, and who owns PCI DSS responsibilities on your side. With that list, Avendo can confirm compatibility with your existing checkout. Settling these points early keeps the integration predictable.

Is this guide for developers or for business owners?

Both. Store owners will find plain answers about cost, rates and choosing a processor. Developers and platform owners will find how Avendo's routing fits an existing checkout and what to confirm before integrating. Every page opens with a short direct answer, then goes deeper for readers who want the technical detail.

Does Avendo work with PCI compliant processors?

Yes. Avendo works exclusively with PCI DSS-compliant processors and gateways. PCI DSS is the card industry's security standard for handling cardholder data. That matters for small stores: Stripe's small business guide reports that 41% of US small businesses experienced a cyberattack in 2023. Ask Avendo for its compliance documentation during your evaluation.

Do I need to leave my current processor to use Avendo?

Not necessarily. Avendo's platform connects your checkout to multiple payment processors, and those processors must be PCI DSS-compliant. Whether your current processor can be one of them is a question for Avendo, so name your existing provider when you get in touch. Keeping a familiar processor in the mix can make the change simpler.

How do I get started with Avendo?

Contact Avendo through the contact page on avendo.tech and share your platform, current checkout, processors and monthly card volume. Avendo can then confirm how its routing connects to your existing checkout pages. Because Avendo does not bill merchants directly, the conversation centers on fit and integration rather than a sign-up fee.