Open or closed: What your POS vendor lets you connect

The question nobody asks in a POS demo

Open or closed decides what else you get to run

Every POS demo covers the same ground. Speed at the counter, inventory, compliance reporting, how the receipts look, what happens when Metrc goes down.

Almost nobody asks whether the system will let them connect anything else to it. It feels like an IT question, and you are there to buy a register.

It is the question that decides the most, because the answer governs every other software decision you make for as long as you run that system.

What open and closed actually mean

Strip out the technical language and it comes down to one thing. Can a tool you choose read from and write to your own data without the vendor's permission as a gate.

An open platform publishes an API, documents it, and lets third parties build against it. You can plug in a marketing platform, a loyalty program, an ecommerce front end, an analytics tool, a brand partner's reporting. The vendor does not have to like your choice for it to work.

A closed platform keeps that access internal. Sometimes there is no public API. Sometimes there is one, available only to partners the vendor approves, which is a different thing wearing the same word.

Open

MarketingLoyaltyEcommerceAnalyticsBrand reportingYour pick
Your POS

You choose what sits on top. The vendor does not have to like your choice for it to work.

Closed

MarketingLoyaltyEcommerceAnalyticsBrand reporting
Your POS

Whatever the vendor sells, when the vendor ships it. Their roadmap becomes your roadmap.

The practical difference shows up the first time you want to run something the vendor does not sell.

This is a commercial decision, not a technical one

Worth being fair about this, because the reflex is to treat closed as lazy engineering.

It is not. Building and maintaining a public API is real work and real support burden, and a vendor who keeps the stack closed gets a genuinely tidier product. Everything matches. Nothing breaks because somebody else shipped a change. Support is simpler when there is only one system to look at.

That tidiness is also the sales pitch, and it is a reasonable one. Fewer vendors, one bill, one support line, everything connected out of the box. For a single store with no marketing hire, there is a real argument for it.

What the pitch tends to leave unsaid is the other half of the trade.

A closed stack means the vendor's roadmap is now your roadmap. If they build a good loyalty product, you get a good loyalty product. If they do not, you wait, and the waiting has no end date you control.

Where it costs you

The cost rarely shows up at signing. It shows up eighteen months later, in a meeting about something else entirely.

Eighteen months in

A brand wants to co-fund a promotion and needs SKU-level data to measure it.
Your team wants to run a win-back on a segment the built-in tool cannot define.
You acquire two stores on a different system and need one view of customers.
The loyalty balance in the app does not match the one at the counter.

Each of these is a small problem with an easy answer on an open stack. On a closed one it is a support ticket and a feature request.

Each of those is a small problem with an easy answer on an open stack. On a closed one, the answer is a support ticket and a feature request, and you find out that your options narrowed at a moment you were not paying attention to.

There is a compounding version of it too. Every month you run on a closed system, more of your operating history accumulates somewhere you cannot reach with tools of your own choosing. The data is still yours in the contractual sense. What you can do with it is set by someone else.

How to find out before you sign

Five questions, and you want them answered in writing.

Get these answered in writing

01

Is there a public API I can read right now, without signing anything?

Public documentation is the clearest signal there is. Vendors who are genuinely open publish it openly.

02

Can any third party build against it, or only approved partners?

If it is a partner program, ask how a company gets approved, how long it takes, and whether anyone has been declined.

03

What can be read, and what can be written?

Read-only access to your own transactions sounds open and is not. Ask about customer records, loyalty balances and order data specifically.

04

Is access included, or priced separately?

Charging per integration or per call is a soft version of closed.

05

If I want to run a marketing platform you do not sell, what happens?

The one that gets you a real answer, because it is the actual scenario rather than a technical question.

If a rep cannot answer these in the room, that is still an answer. The ones with open platforms tend to enjoy this conversation.

See where your POS actually lands

We publish what each integration supports: loyalty signup, redemption and status at the register, plus ecommerce. Twelve systems, side by side.

Get the integration map →

Where AIQ sits in this

We built on the assumption that operators should get to choose. AIQ integrates with Dutchie, Treez, Flowhub, Cova and most other systems running in cannabis retail today, and the work on our side is the same whichever one you run.

Where we cannot go is where the door is closed from the other side. Some platforms do not permit outside connection at all, and no amount of engineering on our end changes that. If you are running one of those, we are not going to pretend otherwise, and you should know that before you evaluate us rather than after.

That is also why we think the question is worth asking early. We would rather lose a deal to a stack decision you made with full information than win one that falls apart when you find out what you cannot connect.

You are choosing more than a register

A point of sale decision looks like a decision about a point of sale. For the length of that contract, it is also a decision about your marketing platform, your loyalty program, your ecommerce, your analytics, and anything a brand partner might want to measure.

What you are really choosing
Your marketing platform, loyalty program, ecommerce, analytics, and anything a brand partner wants to measure, for the length of the contract.
When it shows up
Rarely at signing. Usually a year or more later, in a meeting about something else.

Open or closed is the setting that determines whether those stay your decisions.

Worth one question in the demo.

Thinking about a new POS?

Our field guide covers what carries over when the register changes, and which loyalty steps your team can complete at the counter on each system. Twelve POS platforms mapped.

Download the field guide →  ·  Talk to us about your stack →

Paul Aparicio

Paul Aparicio is a marketing leader at AIQ, where he helps partners grow through thoughtful strategy, creative storytelling, and performance-driven campaigns. With a strong foundation in brand development and partnership engagement, Paul blends practical marketing expertise with a creative lens to turn ideas into memorable experiences. Based in San Diego, he brings a passion for connecting culture with conversion and has a diverse background in digital content, creative direction, and visual storytelling. Outside of work, Paul channels his creativity into photography and community storytelling through visual media.

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