Microsoft Fabric vs. Jet Cube: Is It Time to Modernize Your Dynamics 365 BC Reporting?

The short version

If your finance team still lives in Excel pivot tables every month-end, this one's for you. Plenty of Dynamics 365 BC (and older NAV) customers still run Jet Cube and Jet Reports for Excel-based financial reporting that was built for a pre-cloud era. It worked. It still works, sort of. But the world moved on — and this article walks through what changed, how Fabric stacks up against Jet Cube, and how to tell whether it's actually your turn to make the switch.

Let's start with an honest question: When was the last time your monthly reporting felt fast?

For a lot of teams, the answer is "a while ago." Not because anyone did anything wrong — Jet Cube was a genuinely smart choice back when it was picked. But here's the thing: OLAP cubes were revolutionary in their time, but data volumes, AI expectations, and real-time needs have outgrown them. 

So the real question isn't "is our reporting broken?" It's "is it still built for where we're going?" Big difference. 

What Jet Cube actually is (and where it starts to creak) 

Quick refresher, because it helps to be precise about what we're comparing.

Jet Cube is part of Jet Analytics from insightsoftware — a data warehousing/OLAP layer built on Jet Data Manager. It ships with six pre-built cube templates (Finance, Sales, Purchases, AR, AP, and Inventory) tailored to Dynamics 365 BC/NAV, and most people use it through Jet Reports, which is Excel-based, pivot-style reporting.

And to be fair, it earned its keep. It's got a familiar Excel interface, it's purpose-built for BC financials, and it's fast to stand up standard reports. If you've ever handed a controller a working finance report by lunchtime, you know why people liked it.

But the cracks show up as your business grows. You're tied to an on-prem/SQL Server OLAP dependency, cube schemas are rigid, scaling and refresh get painful, non-Dynamics data support is limited, and there's minimal AI or self-service.

Translated into everyday frustration: reports that feel sluggish or fragile, data that only knows about BC/NAV, no real-time view of anything, and someone on IT quietly babysitting a SQL Server so the cubes keep refreshing.

This isn't just your company — it's the whole stack  

If it feels like the ground is shifting under Jet Cube, that's because it is. OLAP tech like Jet Cube is increasingly seen as legacy in the Microsoft data stack, growing data volumes and real-time demand are outpacing on-prem cubes, business users now expect AI-assisted, self-service analytics rather than static Excel pivots, and Microsoft's roadmap and R&D investment is concentrated in Fabric — not legacy OLAP tooling.

That last point is the quiet one that matters most. When the vendor stops investing in a platform, it doesn't fail overnight — it just slowly falls behind while everything around it gets better.

So what's Microsoft Fabric, in plain terms? 

Think of Fabric as Microsoft pulling all its analytics tools into one roof. It's a unified SaaS analytics platform that brings together Power BI, Azure Synapse, Data Factory, and Azure Data Lake.

The part that saves you real headaches is the foundation. Fabric is built around OneLake — a single logical data lake with zero-copy/zero-ETL access across workloads — and it covers the whole pipeline: ingestion, engineering, warehousing, real-time analytics, data science, and Power BI reporting, all in one place.

And here's the bit BC customers tend to perk up at: Fabric has native Copilot/AI — natural-language querying, automated semantic models, AI-generated report pages — plus direct connectivity to Dynamics 365 BC, so you don't need a separate OLAP cube layer sitting in the middle anymore.

In other words: ask a question in plain English, skip the cube, get an answer.

The side-by-side, no spin 

"Okay, but what does moving actually involve?" 

Good news: it's a phased thing, not a rip-and-replace weekend that ruins everyone's month. The typical path is:

Assess your current Jet cubes and reports → Map your data sources → Set up a OneLake/Fabric workspace → Rebuild the semantic model in Power BI → Run both in parallel and validate → Cut over

You also don't have to do it all at once to feel the benefit. A smart first move is to connect Business Central directly to Fabric, then rebuild your top 5–10 Jet Reports as Power BI reports. Get the reports people actually use working first, and momentum takes care of the rest.

And for the inevitable "but our team loves Excel" pushback? Covered. Excel-attached users can keep working in Excel through Analyze in Excel / Copilot in Excel, which takes a lot of the sting out of the transition.

How to know if it's genuinely your turn 

Skip the hype and just look at your own situation. Watch for these signals:

• Reporting that's slow or brittle

  
  

• Data that only covers BC/NAV

  
  

• No real-time visibility

  
  

• Data volume that keeps climbing

  
  

• Leadership asking for AI and self-service

  
  

• A SQL Server/cube maintenance burden that never really goes away

  
  

Then be honest about the tally:

If most of those ring true, you've got a strong case to seriously evaluate Fabric.

If your reporting needs are simple, stable, and small-scale, Jet Cube may still do the job short-term. (Yes, we'll say that out loud — not every business needs to move tomorrow.)

The takeaways worth remembering 

• Jet Cube did its job well for Dynamics-centric Excel reporting — no shame in having relied on it.  

  
  

• But Fabric is where Microsoft's investment, and most businesses' needs, are heading.  

  
  

• You can start small: connect BC to Fabric, rebuild your key reports, and keep Excel in the picture for the people who love it.  

Where to go from here 

Here's the honest recap: Jet Cube served Dynamics-centric Excel reporting well, but Fabric is where Microsoft's investment — and most businesses' needs — are heading.

If a few of those warning signs felt a little too familiar as you read, that's your cue. Book a Fabric readiness assessment/reporting audit and get a clear, no-pressure picture of what modernizing would actually look like for your reports.

Book My Assessment!