Data Integrity

Data integrity is not about perfect accuracy—it’s about consistent alignment across your system.

The definition

Data integrity is the consistency and alignment of data across your measurement system.

It’s not defined by a single number being correct.

It depends on whether the system produces outputs that remain consistent across:

  • collection
  • processing
  • storage
  • reporting

When these layers are aligned, the data can be trusted.

Why this matters

Analytics decisions depend on trust.

That trust does not come from isolated accuracy.

It comes from consistency across the system.

When integrity is high:

  • numbers align across platforms
  • trends behave predictably
  • discrepancies can be explained
  • decisions can be made with confidence

When integrity breaks down:

  • numbers conflict
  • reports require interpretation
  • attribution becomes unreliable
  • confidence declines

This is not about a single error.

It is about how the system behaves as a whole.

How it breaks down

Data integrity degrades when parts of the system fall out of alignment.

Common causes include:

  • inconsistent event definitions
  • mismatched processing logic across platforms
  • incomplete or missing data at collection
  • transformations that alter meaning over time
  • differences between frontend and backend data
  • uncoordinated changes across the system

No single issue determines integrity.

It is the accumulation of misalignment across the system.

Where it shows up

Integrity issues rarely appear as obvious breakage.

They show up as friction across the system:

  • GA4 data does not match revenue
  • attribution varies between platforms
  • dashboards require ongoing explanation
  • teams rely on different numbers for the same metric
  • confidence varies depending on the report

Over time, the system becomes harder to trust—even when it appears to be working.

Why it doesn’t fix itself

Data integrity is not self-correcting.

Once misalignment is introduced:

  • inconsistencies persist across reports
  • new data builds on unstable foundations
  • fixes are applied locally, not system-wide
  • complexity increases

Without alignment, the system continues to produce conflicting outputs over time.

What this means

Data integrity is not a feature of a tool.

It is a property of the system.

Restoring integrity requires:

  • aligned data definitions
  • consistent implementation across platforms
  • coordinated changes over time
  • ongoing validation

Without these, discrepancies continue to accumulate.

What this means for your system

If your data is difficult to reconcile, the issue is not isolated.

It’s systemic.

Improving individual reports may reduce visible discrepancies.

It does not restore system integrity.

The next step

Before trying to fix discrepancies, you need to understand how the system is behaving.

An Evaluate engagement identifies:

  • where alignment breaks down across the system
  • how discrepancies are being introduced
  • what is required to restore consistency

Start with Evaluate

Doug McCaffrey
Designs and maintains analytics systems that remain reliable over time.