Can your existing software be connected instead of replaced?

Frequently, yes. If each tool is doing its job well and the pain is that they do not talk to each other, connecting them may be less disruptive than replacement, depending on the interfaces, data quality and maintenance involved. The exception is when the connection can only be made through interfaces the vendor never intended you to use.

How software is normally connected

An API

A documented interface the vendor supports and versions. This is the sound option. If a tool has a public API and it covers the records you need, connecting is a normal piece of engineering rather than an adventure.

Webhooks

The tool tells you when something happens, rather than you asking repeatedly. Useful for near-immediate reactions such as a new order or a completed payment.

Supported exports and imports

A scheduled file exchange is unfashionable but perfectly serviceable for daily or hourly synchronisation, and it is often the only route older systems offer.

An integration platform

Middleware that already speaks to both tools. Quick to set up, easy to change, and worth checking before anything is built. The trade-off is another subscription and another dependency.

Use interfaces the vendor supports. Screen scraping and unofficial endpoints work until the day they silently stop.

When connecting is the lower risk choice

• Each system is doing its own job well and people know how to use it.
• The problem is duplicate entry or a missing view across tools, not the tools themselves.
• The data you need to move is a small, clearly defined set of fields.
• A migration would put historical records and compliance obligations at risk.
• You want an improvement this quarter rather than a project next year.

When integration becomes a brittle workaround

• There is no API and the only route is automating the user interface.
• You are synchronising the same field in both directions and inventing rules about who wins.
• The integration has to reimplement business logic that belongs inside one of the systems.
• One of the tools is unmaintained, so the connection is propping up something already failing.
• The chain has grown long enough that nobody can say where a given record originates.

Two-way synchronisation needs explicit conflict handling. Decide which system owns each field, how changes are ordered and how duplicate or delayed events are handled.

Questions to ask a vendor

1. Do you offer a documented public API, and is it included in our plan?
2. Which records and fields are readable, and which are writable?
3. Do you support webhooks, and for which events?
4. What are the rate limits?
5. How do you handle breaking changes, and what notice is given?
6. Can we export our full data in a usable format if we leave?
7. Is there a sandbox we can test against?

The final two answers matter even if you never integrate. They tell you how portable your business actually is.

When replacing really is right

If a tool is the wrong shape for the work, unmaintained, or holds your data hostage, connecting it prolongs the problem. Integration should make a good system more useful, not keep a poor one alive.

Doing nothing is again a valid option. Compare repeated entry with the cost and risk of the connection, including errors as well as time. A small manual step may remain the sensible option.

Compare these requirements with our workflow automation service, including how exceptions, provider limits and handover are scoped.