What is iPaaS? Integration platforms for your webshop explained
iPaaS (integration platform as a service) is a cloud-based integration platform that connects systems such as your webshop, ERP, PIM, WMS and marketplaces through one central layer, instead of wiring them directly to each other. Each system only talks to the platform. The platform translates the data, checks that it is correct, sends it to the right place and keeps track of what happens along the way.
The easiest way to understand it is to picture an interpreter in a meeting where everyone speaks a different language. Without an interpreter, everyone has to learn everyone else's language. With one, each participant only needs to do one thing: talk to the interpreter. When someone joins who speaks yet another language, only the interpreter needs to learn it. An iPaaS is that interpreter for your software.
At Memo we work with Alumio, a cloud-native integration platform from Groningen that we have partnered with since 2020. This page explains how an iPaaS works regardless of which platform you choose, and then what Alumio specifically adds.
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Point-to-point or an integration layer
A point-to-point integration connects two systems directly. Your webshop fetches products from the ERP, and the ERP gets orders back. For two systems that is logical and easy to follow.
It changes once more systems are added. With point-to-point, every new system has to connect to every existing system that needs the same data. The first integration is one connection, but each addition after that brings more connections than the one before, because there are ever more systems to talk to. The number of connections grows much faster than the number of systems. Each of those connections has its own credentials, its own field names, its own error handling and its own ways of breaking. Somewhere along the line, nobody knows exactly which script does what any more.
With an integration layer, each system gets one connection: the one to the layer. A new system means one new connection, no matter how many systems are already there. That is the core of why iPaaS exists. It is not about new technology, but about a different shape: a star instead of a web.
This is also why the word middleware comes up so often around webshops. Middleware is software that sits between systems. An iPaaS is a specific kind of middleware: one that runs as a cloud service, so you do not have to manage a server of your own.
Seven things an integration layer does for you
Translate
A field that has one name in your ERP and another in your webshop is converted on the way to what the receiver expects.
Validate
Data that is wrong, such as an order without an address, is stopped before it causes damage in the next system.
Route
One message can go to several systems, and the layer decides which system gets what.
Log
Every message can be traced: when it arrived, what happened to it and where it went.
Retry
If a system is briefly unavailable, the layer holds the message and tries again later.
Monitor
Whatever gets stuck becomes visible and is reported, before a customer or colleague notices.
Decouple
Systems no longer depend on each other, so you can replace one without touching the rest.
Configuration instead of code
A second difference lies in how integrations are made. With standalone scripts, the logic lives in code: which field goes where, what happens on an error, how often something runs. That code often sits with one developer or one agency, and anyone who wants to change it first has to work out how it works.
In an iPaaS like Alumio, integrations are configured rather than programmed. The mapping between systems, the validation rules and the steps in a route are visible in the platform. Someone else can read, test and change them, including someone who did not build the route.
That matters more, not less, now that code is getting cheaper. A piece of mapping code is quick to write these days and just as quick to replace. What lasts is the agreement behind it: which ERP field becomes which webshop field, which system wins when the data disagrees, and what happens when a message does not arrive. That agreement is what your business actually knows and needs. An integration layer makes it visible and manageable, instead of leaving it hidden in code somebody once wrote.
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When you need an iPaaS, and when you do not
To be fair: not every business needs an integration platform. If you have two systems with one flow between them, say a webshop that only sends orders to your accounting software, and you do not expect that to grow, a direct connection or a good plugin may be enough. An integration layer then mostly adds an extra step.
An iPaaS starts to pay off once one or more of these apply. More than two systems use the same data, such as an ERP, a PIM and a webshop. You want to see what happened to an order or product without calling a developer. You expect a new system, a second webshop, a marketplace or a platform change. Or a failure in an integration directly hits revenue, and you want to see it before the customer calls.
If you are in doubt, look at what you expect a few years from now, not only at what is there today. The cost of an integration layer sits mostly at the start; the cost of point-to-point grows with every addition. How that works out in a quote is covered on What an integration costs.
What Alumio specifically does
Alumio is a cloud-native, config-first integration platform. A few things make it especially useful for webshops.
Connectors. Alumio has preconfigured connectors for popular software, plus generic connectors that can connect any API. A standard system is connected quickly, and so is a less familiar one with a usable API.
Logs per route, retries and resubmitting. Every message is in the logs, per route. When something fails, Alumio retries according to the rules you set. If a message stays stuck, you can resubmit it once the cause is fixed, without guessing whether it was already processed.
Unlimited connections. Every Alumio edition includes unlimited connections, users and workflows. You pay for the number of tasks processed. Connecting an extra system therefore does not cost an extra licence, which fits the idea of an integration layer: it should be easy to grow.
Monitoring by Alumio itself. Alumio monitors the health, performance and errors of the integrations on the platform. On top of that, we agree an SLA with clients that matches their own routes. More on Managed integrations.
Two integration layers in practice
Fibershirts: absorbing a platform change. Fibershirts, part of the LifeGoods story, moved from Shopify to Shopware. With point-to-point integrations, a move like that means rebuilding every connection to the old webshop. With an integration layer in between, the webshop is one connection to that layer: the old one comes out, the new one goes in, and the systems on the other side notice little of the switch. How we approach a migration like that is covered on Shopware migration.
XXL Nutrition: four systems in one overview. At XXL Nutrition, a sports nutrition brand in the Benelux, Magento as webshop, Pimcore as PIM and Exact Online as ERP were already connected. When a new WMS was added, Ceyenne by Diract IT, we brought the routes between those four systems together in Alumio: sales orders, purchase orders, product and stock updates, fulfilment, returns and receipt of purchase orders. The goal was not more automation, but overview and scalability. Exactly what an integration layer promises. Read the XXL Nutrition case.
Want to see what this looks like for the connection with your ERP? Read ERP integration for your webshop.
Is an integration layer right for your situation?
Tell us which systems you run today and which you expect to add. In half an hour we will know whether a direct connection is enough or an integration layer gives you more, and where to start if it does.
Frequently asked questions
What is iPaaS?
iPaaS stands for integration platform as a service. It is a cloud-based integration platform that connects systems such as a webshop, ERP, PIM and WMS through one central layer, instead of wiring them directly to each other. The platform translates, validates, routes and logs the data flowing between those systems.
What is the difference between iPaaS and a point-to-point integration?
A point-to-point integration connects two systems directly. With iPaaS, each system only talks to the platform. With a few systems that makes little difference, but the number of point-to-point connections grows much faster than the number of systems. With an integration layer, a new system always means one new connection.
Is iPaaS the same as middleware?
iPaaS is a form of middleware: software that sits between systems. The difference is that an iPaaS runs as a cloud service. You do not manage a server yourself, and the platform comes with logging, retries and monitoring built in.
Do I need an iPaaS for my webshop?
Not always. With two systems and one flow between them, a direct connection may be enough. An iPaaS pays off once more systems use the same data, when you want to see what happens to every message, or when you expect expansion or a platform change. In an introduction we look together at where you stand.
Does Alumio work with every webshop platform?
Alumio is not tied to one webshop platform. Our Alumio projects run on Shopware, Shopify and Magento. Through the generic connectors, any other system with a usable API can be connected too.