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Migrating Off Legacy BI

A practical migration guide for organisations moving from Qlik, Tableau, MicroStrategy, or on-premise SSRS to a modern analytics platform. Covers sequencing, risk management, and how to avoid rebuilding the same problems in a new tool. See our data platform and warehouse work on the website for more. Last updated 17 June 2026.

Legacy BI platforms do not become a problem all at once. Licensing costs rise a little each year, the vendor roadmap gradually diverges from what the business needs, and the team that built the original reports is no longer around to explain how they work. By the time the decision to migrate is made, the urgency is real.

This guide covers the practical approach to migrating from Qlik, Tableau, MicroStrategy, or on-premise SSRS to a modern analytics platform - including sequencing, risk management, and how to avoid rebuilding the same problems in a new tool.

85%
of AI projects fail
Gartner
3
trust-killers in every engagement
7
blocks with every AI output

A migration is an opportunity to improve on what existed, not just to replicate it.

What every legacy BI migration has in common

Regardless of the platform being migrated from, the same patterns appear: a larger report estate than anyone thought, a smaller active user base than the licence count suggests, and critical reports nobody knows how to rebuild because the original developer has left.

Sequencing, risk, and change management

A migration that tries to move everything at once is almost always a difficult project. The ones that go well move in phases: audit first, then the highest-value reports, then the long tail - with parallel running to maintain continuity and structured change management to keep the business on side.

What the guide covers

  • The patterns that appear in every legacy BI migration regardless of the source platform
  • How to audit the existing estate and identify what is worth migrating versus retiring
  • A phased migration approach that maintains business continuity throughout
  • How to translate platform-specific concepts across Qlik, Tableau, MicroStrategy, and SSRS
  • How to avoid rebuilding the same structural problems in a modern platform

Who this is for

IT leads, data managers, and BI teams responsible for migrating a legacy analytics platform to Power BI or another modern tool, particularly those dealing with a large or poorly documented existing report estate.

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