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Most businesses we speak to know their data stack needs work. Reports take too long. Analysts spend more time wrangling spreadsheets than finding insights. The warehouse hasn’t been touched in years. And whenever someone suggests a proper overhaul, the conversation quietly dies because it feels too big, too risky, and too disruptive.
The good news? You don’t need a multi-year transformation programme to make real progress. In our experience, a focused 90-day plan can unlock genuine value, build momentum, and set you up for sustainable modernisation, without grinding the business to a halt.
Here’s how we think about it.
Days 1 to 30: Understand What You Actually Have
The biggest mistake organisations make is jumping straight into solutions before they understand the problem. The first month is all about honest assessment.
Map your current data flows: where data comes in, where it lives, where it goes, and where it gets stuck. Talk to the people who use the data every day, not just IT. They’ll tell you what’s really broken. A data scientist who spends three hours every Monday manually reconciling two reports is your canary in the coal mine.
During this phase, document your pain points and, crucially, quantify them. How many analyst hours are lost to manual prep each week? How long does it take to answer a straightforward business question? These numbers will become your baseline for measuring success later, and your business case for investment.
Don’t try to fix anything yet. Just listen, map, and understand.
Days 31 to 60: Pick One Thing and Prove the Value
With a clear picture of your landscape, choose one high-impact area to modernise first. Not everything, not even the most complex problem. Pick something where the pain is real, the scope is manageable, and a quick win is visible to stakeholders.
That might be moving a creaking on-premise data warehouse to a cloud platform. It might be replacing a fragile, manually-maintained pipeline with something automated and reliable. It might simply be getting a clean, trusted data model in place for one business function.
Run this as a focused pilot. Set clear success criteria upfront. Is it faster reporting? Fewer errors? Analyst time saved? Build it, validate it, and measure it against your baseline. By the end of this phase, you should have something tangible to show, something that makes people think “why didn’t we do this sooner?”
We’ve helped clients navigate exactly this kind of pilot, and the reaction from business stakeholders is almost always the same: the results speak for themselves far more persuasively than any slide deck.
Days 61 to 90: Build the Roadmap for What Comes Next
A successful pilot changes the conversation entirely. It shifts modernisation from “a nice idea we’ll get to eventually” into something the business actively wants. Use that momentum.
In the final phase, take stock of what you learned. What worked? What surprised you? What dependencies appeared that weren’t visible at the start? Use these insights to design a realistic, prioritised roadmap for the next 12 to 18 months.
This isn’t about planning everything in detail. It’s about knowing which problems to tackle next, in what order, and roughly what it will take. Think of it as a living plan that you’ll refine as you go, not a rigid blueprint.
One thing we’d emphasise: keep the roadmap business-led, not IT-led. Every initiative should connect clearly to an outcome the business measures and cares about.
A Few Things to Keep in Mind
The temptation with data modernisation is always to go too big too fast. Ripping out everything and replacing it wholesale is high-risk, high-cost, and almost always takes longer than anyone expects. The incremental approach, done well, is less glamorous but far more likely to deliver lasting results.
Equally, don’t let perfect be the enemy of good. A data stack that’s 80% modern and delivering real value today beats a theoretically perfect one that’s still 18 months away.
And make sure someone senior owns this. Not just IT. Modernisation touches every part of the business, and without clear executive ownership, even the best plans stall.
Where to Start
If the idea of a 90-day plan sounds appealing but you’re not sure where to begin, we’d love to help. At Idiro, we work with clients across all stages of the data journey, from initial assessments through to full modernisation programmes. Sometimes an outside perspective is exactly what’s needed to cut through the noise and find the right starting point.
Feel free to get in touch, we’re always happy to have that first conversation.
