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What we do

Getting your systems
to talk to each other

Your accounts, till, shop and job software joined into one place that belongs to you — so a question can be answered without three exports and an argument about which total is right.

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The problem

Every interesting question in a business spans systems. Which customers are most profitable needs revenue, cost to serve and discount — three places. Are we about to run out needs stock, sales rate and inbound orders — three more.

That's why the answer is usually a spreadsheet and a spare evening. We build the layer that makes those questions answerable properly: one database, holding your data, with the identities resolved and the definitions agreed.

What we build
01

A technical audit first

We establish exactly what each of your systems will give up — API, scheduled export, or nothing — before you commit to anything. Occasionally the answer is 'not much', and you find that out at the start.

02

Incremental sync

Only what changed since last time, so refreshes stay cheap and can run hourly forever rather than hammering your software nightly.

03

Identity resolved

The same customer under three different names becomes one entity, with a decision about which system owns the record going forward.

04

Definitions agreed

One written line per term, because most reporting disagreements turn out to be undeclared definitions rather than bad data.

05

One-way flows with clear ownership

Each piece of information has one owning system and flows outward from it. Two-way sync is where integration projects go to die.

06

Monitoring that tells you

A heartbeat, so a sync that stopped in March doesn't get discovered in June.

Proof

Deep integration in practice

Companies House, HMRC's Making Tax Digital APIs, Xero, Google Workspace, e-signature, direct debit and AML — all joined inside one platform running a 487-client firm.

os.buzzaccounting.co.uk — job planner
Deep integration in practice
Case study

The practice operating system

Twenty-plus modules, 487 live clients, six AI agents and full HMRC Making Tax Digital filing. Replaced every piece of third-party practice software.

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Straight answers

The things people ask.

Do we have to replace anything?

No. Nothing gets ripped out. We read from what you have and build around it, which is cheaper, faster and far less disruptive than a migration.

Is it read-only?

By default, yes — with keys you create in your own account and can revoke in one click. Write access is only added for something you specifically asked for, like creating a draft order.

Where does the data live?

In a database in your name that you keep. If you stop working with us, you keep the hub, the history and everything built on it.

What if one of our systems has no API?

Then we say so early and pick deliberately between reorganising around it, shrinking the manual step to a file drop, or replacing it. What we won't do is scrape a system that doesn't want to be read — that breaks silently at the worst moment.

How long does it take?

Depends entirely on how many systems and how cooperative they are. You get a date with the quote, after the audit, rather than a guess beforehand.

Read more

Written on this, at length.

Guide

Can your software actually talk to anything? A non-technical audit

Read →
Article

Why most integrations break, and the ones that don't

Read →
Guide

How to stop your team typing the same thing twice

Read →
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Tell us what's eating your week.

Tell us the job that keeps not getting done. We'll tell you if software can take it off you, and what it costs.

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