Most small businesses run on several systems: a CRM, an accounting package, an email platform, a booking tool, perhaps an online shop. Sooner or later, someone gets tired of copying data from one to another and asks the obvious question: can we connect them?
There are usually two ways to do it. You can use a ready-made connector, either one built into the products or one from an automation platform. Or you can build a custom integration designed around your own systems and rules. Both have their place. The trick is knowing which one fits the job in front of you, because the wrong choice tends to cost more later than it saves at the start.
What each option really means
A ready-made connector is a pre-built link between two products. You sign in to both, choose what should sync, map a few fields and switch it on. It is quick, usually affordable, and needs no development work. The trade-off is that you get the options the connector’s maker decided to offer, and not much more.
A custom integration is built for your specific situation. It can follow your business rules, transform data the way you need it, handle unusual cases, and connect systems that have no ready-made connector at all. The trade-off is time, cost and the need for someone to maintain it.
Neither is better in general. The right answer depends on four questions.
1. How reliable does it need to be?
Start by asking what happens if the connection quietly stops working for a day. If a new newsletter subscriber reaches your mailing list a day late, nobody is hurt. If paid invoices stop reaching your CRM and your team chases customers who have already paid, that is a different story.
Ready-made connectors are often perfectly reliable for common, simple flows. The weakness is usually visibility: when something fails, the error may sit in a log nobody reads. For anything important, check how failures are reported, whether failed records are retried, and whether you can see what was and wasn’t synced. A custom integration can be built to alert the right person and recover cleanly, but only if that is part of the brief.
2. How much data, and how often?
Volume changes everything. A connector that works well for a handful of records a day may slow down, hit usage limits or become expensive when you are moving thousands of records, or when you need changes to appear within seconds rather than minutes.
Think about where you will be in a year or two, not just today. Look at how the connector is priced: per task, per record or per month. Check the limits on the systems at both ends as well, because most platforms restrict how many requests other software can make. A custom integration can batch records, schedule heavy work out of hours and avoid unnecessary calls, which matters once volumes grow.
3. How many edge cases does your process have?
This is where most connectors run out of road. The standard flow, such as “new contact in system A creates a contact in system B”, is easy. Real businesses are full of exceptions:
- The same customer exists twice with slightly different email addresses.
- One order needs to be split across two accounts, or two departments.
- A field means different things in each system, or uses different values.
- Records should sync only when they reach a certain stage, and update rather than duplicate when they change.
- Deletions, refunds and cancellations need to be reflected on the other side.
If your process has only one or two of these, a connector with some careful configuration may cope. If you find yourself building long chains of workarounds, filters and manual clean-ups, that is usually the signal that a custom integration would be simpler and more dependable.
4. Who owns it?
Every integration needs an owner, whichever way it is built. Ask yourself:
- Who set it up, and is it documented? Connectors created under one employee’s personal login have a habit of breaking when that person leaves.
- Where does it live? With a connector, the logic sits on the vendor’s platform. With a custom integration, you should own the code and the accounts it runs on.
- What happens when one system changes? Software updates can change fields and behaviour. Someone needs to notice and adjust.
- Can you leave? Make sure you can export the configuration or the code, so you are not locked in to one supplier.
A simple way to decide
As a rule of thumb, a ready-made connector is a good fit when the flow is common, the volume is modest, the exceptions are few and a short delay or occasional manual fix wouldn’t hurt. A custom integration makes sense when the data is business-critical, volumes are high or growing, your process has real exceptions, or you need full control over how the connection behaves and who owns it.
Many businesses end up with both: connectors for the simple, low-risk flows, and one or two custom integrations for the processes the business depends on. Starting with a connector is also a good way to learn. Keep a list of where it falls short, and you will have a clear brief if you ever need something built to measure.
The practical takeaway
Don’t choose based on the setup time alone. Weigh reliability, volume, edge cases and ownership, and be honest about what a failure would cost. If you would like a second opinion on which of your connections should stay simple and which deserve a proper build, our system integration and custom development team can help you map it out.
Frequently asked questions
What is the difference between a connector and a custom integration?
A ready-made connector is a pre-built link between two products, usually set up with a few clicks and limited options. A custom integration is built for your specific systems and rules, so it can handle your own data, logic and exceptions, but it takes longer to build and needs someone to look after it.
Are ready-made connectors reliable enough for important data?
Many are, for simple and common tasks. The risk grows when the data is critical, the volume is high, or the process has exceptions the connector wasn’t designed for. Whichever route you choose, make sure failures are visible and someone is told when a sync stops.
Can we start with a connector and move to a custom integration later?
Yes, and that is often a sensible path. Start with a connector to prove the process, keep notes on where it falls short, and use those notes as the brief if you later need something built to measure.
Who should own an integration inside a small business?
One named person should know what each integration does, where it is configured and who to call when it breaks. They don’t need to be technical, but they do need access to the accounts and the documentation.