Cepheus Navis Tableau to Power BI with Verified Semantic Equivalence

WHAT'S PROVEN TODAY

Legacy platforms. Modern targets.
Tested migration paths and growing.

Every path below is fully built and tested today. Navis's architecture is designed to extend to new sources and new targets as the BI landscape evolves additional targets are already in active development.

This reflects what's proven today, not a ceiling. As new BI platforms gain adoption, Navis is built to extend to them.

HOW THIS WORKS, START TO FINISH

Evaluate at your own pace. Go deeper only when you need to.

Analyze

See your estate's complexity and coverage across all ten platforms before any conversation with us.

Convert

Produce the full converted project with a signed evidence capsule, licensed for your estate at scale.

Engage

At any point in the cycle, or for enterprise engagements, contact us.

Every stage carries the same standard of proof nothing is asserted that hasn't been validated. Reach out when you're ready to move from evaluation to a licensed conversion, and we'll scope the engagement around your estate.

Navis INSTALLATION AND USAGE

Installation and Conversion Steps

Prerequisites

Python 3.9 or later
Access to pip for package installation
Valid Navis license from Cepheus

Click the source and target to get the installation details

🚀

Migration path for this platform combination is coming soon.

BUILT FOR

Who this is for

Companies running any of the ten supported platforms especially those with large report libraries.
Companies whose BI license renewal is coming up a migration option gives leverage in price negotiations, even before deciding to move.
Companies already investing in Power BI, Databricks, or AWS they've chosen the destination; Navis completes the journey.
Consulting and system-integration partners running migration projects for their own clients, using Navis to deliver faster.

ALREADY MIGRATED? FIND OUT IF IT'S RIGHT

Validate an existing migration in seconds, not weeks

Migrated already using another tool, an LLM, or by hand? Run a consult check against the original source file. In seconds, you'll know exactly which calculations are correct, which are equivalent but written differently, which need review, and which are missing entirely no ambiguity, no guesswork.

WHY NOW

The cost of waiting is rising, not flat

Rising license costs

Legacy BI platforms carry high recurring fees that only grow with usage and users.

The cloud and AI direction is already set

Reporting and analytics are moving to cloud and AI-ready platforms; standalone BI tools are being consolidated into that shift, not left outside it.

Older platforms are aging out

Tools like Crystal Reports and SSRS see less investment and support every year the estate isn't getting easier to move the longer it waits.

The real blocker isn't budget, it's trust

The single biggest reason BI migrations stall is fear that the new reports will show different numbers. Navis removes that fear with proof, not reassurance.

FULL FIDELITY, NOT A PARTIAL PICTURE

We move the complete reporting setup not just pictures of charts

All calculations and formulas. Every business calculation totals, growth %, year-to-date, rankings, date logic, and more converted natively into the target platform's own language.
All charts and dashboards. Bar, line, pie, tables, KPIs, funnels, maps, pivot tables, and multi-tab dashboards rebuilt with the same layout.
All filters and interactivity. Dropdowns, date filters, and parameters keep working the way users already expect.
Custom SQL reports. Reports written directly in SQL are moved and tested against the customer's live database.
Bulk migration. Hundreds of reports extracted, converted, and deployed as a single job not one by one.

PROVED, NOT PROMISED

Every conversion is proven against real data not asserted

Navis breaks every calculation into minimal, validated semantic building blocks, individually tested by running both the original expression and its converted equivalent against a reference dataset until results match exactly. A formally proved composition rule extends this from a finite library of validated patterns to the full space of real-world expressions your reports actually use across any of the ten legacy platforms.

Exact

Individually validated against reference data across every evaluation context.

Composed

Derived from validated building blocks; correctness guaranteed without a separate test.

Deterministic

Structural elements with a direct, definitional mapping no validation needed.

Fidelity gap

Cannot be fully translated; the gap is explicitly documented, never hidden.

A worked example

Before (legacy platform):

            ZN(SUM([Sales])) / WINDOW_AVG(SUM([Sales]))

After (target platform):

            DIVIDE(COALESCE(SUM(Sales), 0), [WindowAvgSales])

Navis decomposes this into two independently validated building blocks the zero-fallback sum, and the windowed average joined by a pure division operator. Because each block is individually proven and division is a pure operator, the composition theorem guarantees the combined result is correct without needing to test this exact combination separately.

Zero Data Access: Navis never connects to a live source or target system. It parses exported metadata only, on your premises or in your VPC zero outbound calls, no telemetry, no credentials stored.

AUDIT-GRADE EVIDENCE

Every conversion produces proof your auditors can check independently

Input artefact the original workbook or report file.
Output artefact the generated project for your chosen target.
Semantic equivalence records source expression, converted expression, confidence level, and mapping rule for every element.
Fidelity gap report every unmappable element listed with its triage category before you commit.
Execution trace every mapping decision in deterministic order.
Cryptographic seal hash chain and digital signature tamper-evident by design.

FULL HONESTY, NO SURPRISES

You see what won't convert before you commit, not after

In every migration, a very small number of calculations may have no equivalent on the target platform, because the target simply doesn't support that feature. Navis never hides or silently drops these. Before a project starts, you receive a clear list: what will migrate, what can't, and why.

Tableau to Power BI

WHY CUSTOMERS CHOOSE Navis

Five reasons this is different from a rebuild project

1

We migrate business processes, not code.

We don't just translate your code and park it on the new platform, we modernize the workflows you and your team have come to rely on. Correctness of numbers is a byproduct of preserving your business processes, not the sole goal.

2

Every calculation and measure has been tested on the target platform.

Each conversion measure has been rigorously tested to confirm it works as expected. Various proofs of conversion, including migration decision logs, semantic equivalence records, etc. are provided as part of the Conversion Evidence Capsule.

3

Full honesty and auditability - by design.

Navis has been designed from the ground-up for ease of auditability. What will and won't migrate is disclosed in the fidelity gap report before the project starts. The tamper-evident Conversion Evidence Capsule also contains supporting compliance documentation.

4

Speed and reliability.

Manual migration takes an experienced development team a week or more per workbook. Navis's automation helps finish even the most complex workbooks in days, and with a fraction of the testing effort.

5

Widest coverage in one engine.

Ten legacy platforms and three leading targets today, all fully tested, all in one engine with more on the way.

QUESTIONS WE GET ASKED

Frequently Asked Questions

How is this different from a manual rebuild or a consulting-led migration?

A manual rebuild re-creates each report by hand, at whatever pace and consistency the team doing it can sustain. Navis converts the full estate through the same validated engine every time, so a 10-report pilot and a 500-report estate get identical rigor in days, not months.

What happens to calculations that can't be converted?

They're identified before conversion starts, not discovered afterward. Every unmappable element is listed in the fidelity gap report with the reason it can't translate, so your team knows exactly what needs manual attention and why.

Do you need access to our live systems or production data?

No. Navis operates only on exported metadata files, on your premises or inside your own VPC. It never connects to a live source or target system, and nothing is transmitted outside your environment.

What does it actually cost, and how is a project scoped?

Analyze and consult can be run at no or low cost to see your estate's complexity first. A full conversion licence is scoped to the size and makeup of your estate reach out for a quote once you know what you're working with.

We've already migrated using another tool or an LLM can you tell us if it's right?

Yes run consult against your original source file. It checks every calculation and reports whether each one is correct, equivalent but differently written, needs review, or missing, without touching your new environment.

Our BI platform isn't in the list of ten are we out of luck?

Not necessarily. The ten sources and three targets shown are what's proven and fully tested today; the engine is built to extend as adoption shifts. Reach out and we'll tell you directly where your platform stands.

Your BI Modernization Starts Here.

Talk to us Request a licence

Let's discuss your goals and iterate towards a modern BI solution while preserving your time-tested business logic.

One engine. Any BI platform.Business logic preserved.

Legacy platforms. Modern targets.Tested migration paths and growing.