What are HubSpot integrations?
HubSpot integrations connect HubSpot to your other systems so data flows between them automatically. That can be a native marketplace app, middleware such as Operations Hub or Zapier, or a custom integration built on the HubSpot API. The right approach depends on the systems involved, how much data moves, and how tightly the two sides need to stay in sync.
What it is
An integration connects HubSpot to another system so information moves between them without anyone retyping it. That might be your accounting or billing platform, an ERP, a support desk, your product database, or a tool that has no off-the-shelf connector at all. The goal is one reliable source of truth instead of data scattered across systems that quietly disagree with each other.
Not every integration needs custom code. HubSpot's marketplace has thousands of native apps, and for many tools a native connector or a middleware platform like Operations Hub, Zapier or Make is the right, cost-effective answer. The skill is knowing when native is genuinely enough and when its limits, on field mapping, sync direction, volume or custom objects, mean you need bespoke API work.
Where native falls short, I build custom integrations directly on the HubSpot API: two-way sync, custom objects, CRM cards and UI extensions that surface external data inside HubSpot, and webhooks that react in real time. I have done this across every tier over more than ten years, so I can scope the simplest option that will actually do the job, rather than over-engineering it.
Who it's for
- Teams retyping the same data between HubSpot and their finance, billing or ERP system
- Businesses whose native connector almost works but breaks on field mapping or sync direction
- Companies that need external data, like orders or invoices, visible inside HubSpot records
- Organisations with a bespoke or in-house system that has no marketplace app
- RevOps and operations teams needing reliable two-way sync, custom objects or webhooks
What's included
Integration scoping
We map which systems need to talk, what data moves, in which direction, and how often. This is where we decide, honestly, whether a native app, middleware or custom API work is the right call before any money is spent building it.
Native & marketplace apps
Where a marketplace connector fits, I set it up properly: field mapping, sync direction, conflict rules and the filters that stop it flooding HubSpot with the wrong records. Often this is all you need, done well.
Two-way sync
Keeping records aligned in both directions without loops, duplicates or fields overwriting each other, whether through a native sync, Operations Hub data sync, or a custom build with clear rules on which system wins.
Custom API integrations
Bespoke integrations built on the HubSpot API for systems with no connector, or where native limits get in the way: authenticated, rate-limit-aware, with error handling and logging so failures are visible rather than silent.
CRM cards & UI extensions
Surfacing external data, orders, invoices, subscriptions, support history, directly on the HubSpot record with CRM cards and UI extensions, so your team sees the full picture without leaving HubSpot.
Webhooks & custom objects
Real-time webhooks so HubSpot reacts the moment something changes elsewhere, plus custom objects modelled to hold data that does not fit contacts, companies or deals, set up so it reports and automates like native data.
| Situation | Best fit |
|---|---|
| A marketplace app exists and covers your fields and sync direction | Native app |
| Simple, low-volume sync between common tools | Middleware (Operations Hub, Zapier, Make) |
| Native almost works but breaks on mapping, direction or filters | Native plus custom assist, or custom build |
| High volume, real-time sync, or strict data-quality rules | Custom API integration |
| A bespoke or in-house system with no connector | Custom API integration |
| You need custom objects, CRM cards or UI extensions | Custom API / Operations Hub |
The outcome
- One source of truth instead of systems that quietly disagree
- No more retyping data between HubSpot and your other tools
- External data, like invoices and orders, visible right on the HubSpot record
- Reliable two-way sync with no duplicates, loops or overwrites
- An integration scoped to the simplest option that actually does the job
Frequently asked questions
Is a native integration always better than a custom one?
Not always, but it is usually the first thing to check. A well-configured native or marketplace app is cheaper to run and easier to maintain, so if one fits your fields, sync direction and volume, that is what I will recommend. Custom API work is for when native genuinely cannot do the job. The table above sets out which situation calls for which.
Can you connect HubSpot to our finance, ERP or billing system?
Yes. Finance, ERP, billing and support tools are some of the most common and valuable integrations. Depending on the system, that is a native connector, middleware, or a custom build on the HubSpot API. We scope it together first so you know what is involved and what it will cost to maintain.
What if our system has no HubSpot connector at all?
That is exactly what custom API integration is for. If your tool exposes an API, I can build an integration on top of the HubSpot API to sync data, push updates, or surface information inside HubSpot. Where direct integration is not viable, middleware like Operations Hub, Zapier or Make can sometimes bridge the gap.
What are CRM cards and custom objects?
CRM cards and UI extensions display data from another system directly on a HubSpot record, so a rep can see orders or invoices without switching tools. Custom objects let HubSpot store data that does not fit the standard contact, company or deal model, set up so it reports and automates like any native record.
How do you stop two-way sync creating duplicates or loops?
With clear rules. Before building, we agree which system is authoritative for each field, how conflicts resolve, and what triggers a sync. Good integrations include deduplication, loop prevention and error logging so problems surface instead of corrupting data quietly. Skipping this design step is the usual cause of sync chaos.
Do integrations and automation overlap?
They work closely together. An integration moves data between systems; workflows and automation then act on it inside HubSpot, for example routing a lead the moment it syncs in. Many projects combine both, and webhooks often sit at the join between them.