BigDataDig

29/09/2025

https://open.substack.com/pub/datamodernisationjourney/p/037-no-budget-no-insights?r=1tj5ll&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

Why struggling companies can’t build great data teams

21/09/2025

https://open.substack.com/pub/datamodernisationjourney/p/migrations-are-now-5x-faster-heres?r=1tj5ll&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

Forget hype. We're breaking down the industry data that proves a new AI tool can reduce migration workloads by 80%

16/09/2025

Your executives are making million-dollar decisions with yesterday's data...

Most organisations still design around overnight batch processing.
Business questions wait for scheduled report runs.
Analysis happens on yesterday's data at best. Decision-making cycles stretch across days.

This isn't just a technical limitation; it's a strategic vulnerability.
When competitors respond to market changes in hours whilst you're waiting for tomorrow's reports, you're operating in slow motion.

Modern architecture prioritises speed as a design principle:
- Event-driven processing delivers insights as events occur
- Incremental computation updates only what's changed
- Self-healing pipelines recover without manual intervention

Speed-optimised architectures deliver 60% faster time-to-insight and 40% more responsive decision-making.
The question isn't whether you can afford to modernise; it's whether you can afford not to.

What's forcing your executives to wait for insights?

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14/09/2025

https://open.substack.com/pub/datamodernisationjourney/p/037-6-pillars-to-kill-data-bottlenecks?r=1tj5ll&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

The blueprint for a faster, bottleneck-free architecture

10/09/2025

Simple framework to assess your technical debt impact:

The 80/20 Audit
Track your data team's time for 2 weeks:

Maintenance activities:
- Performance troubleshooting
- System patches and fixes
- Workaround implementations
- Legacy system support

Innovation activities:
- New feature development
- AI/ML implementation
- Process improvements
- Strategic projects

If maintenance > 60%, you have a technical debt problem.

If maintenance > 80%, you have a talent retention risk.

Next step: Use this data to build your modernisation business case.

Try this with your team and share what you discover.

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09/09/2025

Unpopular opinion: Keeping legacy systems "because they work" is the riskiest IT strategy in 2025...

Here's why the "conservative" approach is actually dangerous:

Risks that compound daily:
- Knowledge concentration (fewer people understand critical systems)
- Performance degradation (user expectations rise, systems stay static)
- Integration limitations (new capabilities can't connect)
- Security exposure (architectural vulnerabilities can't be patched)

Meanwhile, modern platforms:
- Require less specialised maintenance
- Provide superior monitoring capabilities
- Offer more reliable disaster recovery
- Enable AI implementation instead of blocking it

The reality: Staying put is riskier than modernising to proven cloud platforms.

Agree or disagree? Share your perspective.

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08/09/2025

How much of your data team's time goes to maintenance vs. innovation?

The pattern is consistent across organisations:

- 80% maintenance on legacy systems
- 20% building new capabilities
- Innovation projects are constantly delayed
- Top talent is getting frustrated

This isn't sustainable.

Question for data leaders: What percentage would you estimate for your team? And what is your biggest legacy system challenge at the moment?

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07/09/2025

It's Not About the Money: Why Your Data Engineers Are Leaving

It's the daily battle against technical debt and broken tools that drains their motivation.

31/08/2025

https://open.substack.com/pub/datamodernisationjourney/p/035-5-signs-your-data-architecture?r=1tj5ll&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

Don't wait for a critical failure. Ask these questions now to identify hidden risks in scalability, cost, and security.

25/08/2025

dbt isn't killing traditional ETL...

It's creating expensive hybrid architectures.

Everyone's rushing to migrate everything to dbt, thinking it's a silver bullet.

- 40% of dbt migrations fail to deliver expected value
- Most successful companies keep 20-30% of legacy ETL
- Complex integrations still need traditional tools

Stop thinking dbt vs ETL. Start thinking dbt + ETL.

The smartest data leaders I know use dbt for SQL transformations and keep traditional ETL for complex integrations.

What's your experience? Are you going all-in on dbt or taking a hybrid approach?

P.S. I break down the exact 70/30 rule and when to use each approach in this week's newsletter 👇

https://blog.bigdatadig.com/p/034-dbt-didnt-kill-etl?r=1tj5ll

21/08/2025

3 ETL modernisation costs nobody warns you about...

- Cost #1: Query optimisation retraining
Your team knows how to optimise Oracle queries. Snowflake optimisation? That's 6 months of expensive learning.

- Cost #2: Schema design rework
Legacy ETL schemas don't translate directly to cloud warehouses. You'll rebuild more than you migrate.

- Cost #3: Monitoring blind spots
Your old ETL monitoring tools are not cloud-compatible; budget for a new observability stack and the associated setup time.

What hidden cost surprised you most in your last modernisation project?

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20/08/2025

There are 3 ETL vs ELT decisions that cost companies millions…

That most data architects get wrong.

Want them? Here they are...👇🏻

Million-dollar companies: Choose ELT for compliance-heavy workloads.
Smart companies: Stick with ETL when data masking is required upfront.

Million-dollar companies: Go ELT because "it's modern and scalable."
Smart companies: Calculate the total cost of ownership before choosing.

Million-dollar companies: Pick one pattern and force everything to fit.
Smart companies: Use hybrid approaches based on actual requirements.

So, remember…

You're spending millions on cloud infrastructure.

Don't let architectural fashion trends drive your technical decisions.

What ETL vs ELT choice burned your budget?
Share your story in the comments.

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