Modernization path

Apache Superset or Power BI: our data architects' analysis

Apache Superset vs Power BI: our data architects' analysis. Where Superset prevails, and where Microsoft Power BI remains the sounder choice.

Key figures
2 models
two ways to pay: per user with Power BI, per platform operations with Superset. The right choice depends on your estate and your constraints
0 licence
Apache Superset is Apache 2.0 licensed: no per-user cost, but a platform to operate
Apache Software Foundation
2 conditions
the only cases where switching is warranted: data sovereignty requiring hosting on your own infrastructure, or a large read-only audience
Who is concerned

Business context and modernization stakes.

Apache Superset prevails when data sovereignty requires hosting on your own infrastructure, or when a large read-only audience makes per-user billing decisive. In every other context, Microsoft Power BI remains the platform that deploys fastest and gains adoption soonest among business teams. This analysis is based on the installation and evaluation of Apache Superset by our data architects, from the data warehouse through to access security.

The Microsoft ecosystem around Power BIPower BI at the centre, connected to Microsoft 365, Excel and Teams, which become the entry point to reports.Power BIMicrosoft 365ExcelTeams

Where Microsoft Power BI prevails

In most contexts, Microsoft Power BI is the sounder choice. Our data architects recommend it whenever one of the following situations applies.

  • An established Microsoft environmentMicrosoft 365, Excel and Teams become the natural entry point to reports, with no additional tool to roll out.
  • A need for rapid deliveryThe service is operational from day one: effort goes into the data model and report design.
  • Self-sufficient business analystsAssisted modelling lets them build their own analysis without writing SQL.
  • A contained user basePer-user billing stays legible as long as the audience remains contained.
The Apache Superset chain, on your own infrastructureFour layers on your infrastructure: the data, the layer where each metric is defined once, Apache Superset, then the users.YOUR INFRASTRUCTUREYour usersDashboards and analysisApache SupersetReporting, roles, row-level securityMetrics defined onceVersioned SQL: one answer per metricYour dataWarehouse and ingestion chain

Apache Superset, a sovereign platform operated over time

Apache Superset carries no licence cost and relies on a platform the organisation must build and operate over time. Access International supports this trajectory as a partner, with its nearshore teams. Moving to an open platform is also an opportunity to define each metric once, in versioned SQL: shared definitions guarantee a single answer from one dashboard to the next, and prepare your data to be queried by artificial intelligence tools.

  • Data sovereigntyApache Superset deploys entirely on your infrastructure. Data stays within your perimeter and authentication relies on your corporate directory.
  • Operations assured over timeA production instance runs several services, and the project maintains only its two latest versions. Our teams handle upgrades, backups, monitoring and platform security.
Transparency on our references. Access International has delivered Power BI migrations in production. On Apache Superset, our architects have installed and tested the full chain in house; no migration has been delivered for a client yet.
Source platform

Microsoft Power BI, per-user billing or a data sovereignty requirement

Target technology

Apache Superset + PostgreSQL / ClickHouse / Trino, deployable on-premise

Comparative analysis

The criteria that structure the choice

Licensing model
Microsoft Power BI

Billed per user per month.

Apache Superset

Apache 2.0 licence, no per-user cost.

Hosting
Microsoft Power BI

Hosted by Microsoft. An on-premises edition, Report Server, exists with a reduced scope.

Apache Superset

Fully deployable on your own infrastructure.

Time to value
Microsoft Power BI

The service is operational from day one and security is taken care of.

Apache Superset

A platform to install, secure and operate.

Modelling
Microsoft Power BI

Central semantic model and reusable measures.

Apache Superset

Business logic written in SQL, structured in the database.

Ecosystem
Microsoft Power BI

Integrated with Microsoft 365, Excel and Teams.

Apache Superset

Opens onto databases and open table formats.

Skills
Microsoft Power BI

Accessible to business analysts.

Apache Superset

Requires SQL to build dashboards.

Best suited to
Microsoft Power BI

A Microsoft-equipped organisation seeking fast adoption.

Apache Superset

An organisation that must retain control of its data.

Technology alternatives

Compare target trajectories.

Apache Superset (self-hosted) + ClickHouse / Trino

Maximum sovereignty, on-premise, tech-savvy data team. Mastered 100% open source stack.

Preset, the commercial Superset offering

No obligation to keep data on your own infrastructure, and no in-house operations expertise. ⚠️ The regions announced by the vendor are Virginia, Oregon, Tokyo and Stockholm: none in France or Africa. Its private mode deploys into your own cloud account, but assumes a hyperscaler and vendor operational access.

Metabase Cloud or Self-hosted

Simpler alternative to Superset for less technical teams. Less powerful on advanced SQL but smoother learning curve.

Keep Power BI but optimize

If motivation is only cost, optimizing Power BI capacities (embedded vs Premium, P-SKU vs A-SKU, inactive Pro license audit) costs less than a complete migration.

Scoping reference

Typical duration and team for this path.

A Power BI → Superset migration is typically structured over 6 to 12 months depending on volume. For an estate of 50-150 dashboards with centralized database, plan 6 to 9 months with a 4-5 person cell: data architect, Superset/Python developer, two SQL/data engineering developers, business referent. For larger programs (500+ dashboards, multi-domain), plan 9 to 12 months and 6-8 people. Migration is more expensive than incoming Power BI migration because Superset demands more SQL on database side.

Challenges

  • Reproduce Power BI models on an open source stack without a central semantic model.
  • Ensure visual and functional parity of dashboards.
  • Manage access governance and RLS without Power Platform.
  • Choose the appropriate analytical database (PostgreSQL, ClickHouse, Trino) according to volumes.

ATLAS approach

  • Audit of Power BI dashboards and actual usage.
  • Design of the target Superset stack + suitable analytical database.
  • Dashboard-by-dashboard migration with audited parity.
  • Rebuild of the model on the database side via SQL views or dbt.

Expected outcomes

  • Operational, sovereign Superset platform, on-premise deployable.
  • Access governance via Superset RBAC and SQL row-level security.
  • Data model reconstructed on database side with SQL views or dbt.
  • Documented Microsoft Premium license savings.
Identified pitfalls and ATLAS response

What we learned on this migration path.

Pitfall 01

Underestimating the loss of semantic model. Power BI has a centralized tabular model with reusable DAX measures. Superset has no equivalent — each dashboard does its SQL. Naive migration duplicates business logic.

ATLAS response

Model reconstruction on database side: centralized SQL views (PostgreSQL, ClickHouse), materialized tables for performance, or use of dbt to govern the data model as code. Reusable DAX measures become named SQL views or dbt macros. Greater initial effort but maintainable over time.

Pitfall 02

Migrating dashboards identically. Power BI visuals have their specifics (slicers, drill-through, native interactivity). Reproducing pixel-perfect in Superset frustrates users.

ATLAS response

Targeted redesign per dashboard: for each critical dashboard, 30 min workshop with business to redefine real need, then reconstruction in Superset with equivalent widgets (charts, filters, drill-down dashboards via cross-filters). No pixel-perfect attempt.

Pitfall 03

Underestimating performance on large volumes. Power BI compresses data in memory; Superset queries the database directly, so performance depends on the analytical database chosen rather than on the reporting tool — on standard PostgreSQL, can be slow.

ATLAS response

Adapted analytical database choice: ClickHouse when columnar storage is needed without adding a component to operate, Trino only to join sources that no pipeline consolidates, DuckDB for ad hoc analyses. Standard PostgreSQL suffices up to a few million rows. Performance tests from POC phase.

Pitfall 04

Neglecting row-level security (RLS). Power BI has well-integrated native RLS. Superset offers mechanisms but requires more manual configuration.

ATLAS response

RLS via SQL: filters in views (by authenticated user via Superset RBAC), or Superset RLS configured per dataset. For complex cases (multi-level dynamic RLS), may require custom development. Security parity tests vs Power BI on all user roles.

Cell composition

A specialized cell for this modernization path.

Several distinct profiles, mobilized over the full program duration. Reproducing this cell internally is rarely realistic — the legacy skills shortage and ATLAS expertise depth make outsourcing structurally faster and less risky.

Duration
Comparative audit: 3 weeks · Full migration: 6-12 months if Go decision
Volume
4 to 6 people in migration · 2-3 people in audit-only phase
Profiles

Data & BI Architect

1

Power BI tabular modeling (VertiPaq, DAX) AND SQL/dbt modeling on Superset side, target analytical stack design

Superset / Python developer

1

Superset configuration, dashboards, RBAC, RLS, Python customs if needed, self-hosted or Preset deployment

SQL & data engineering developers

2

Model reconstruction via SQL views or dbt, analytical database choice (PostgreSQL, ClickHouse, Trino, DuckDB), materialized tables

BI business referent

1

Per critical dashboard need-redefinition workshops, reconstructed dashboard validation, editor change management

Security referent (RLS / RBAC)

1 (half-time)

Power BI RLS → SQL RLS + Superset RBAC mapping, per-user-role security parity tests

Analytical DBA

1 (per target)

ClickHouse / Trino / PostgreSQL tuning, ingestion, indexing, dashboard performance monitoring

Access field experience

This path in real conditions.

Access capability — multi-stack BI
Power BI migrations delivered · Apache Superset tested in house

Proven capability on Power BI, with delivered migrations (Pentaho to Power BI in the North American public sector, a French telecom, a multi-country Dynamics rollout) and data engineering. On Apache Superset our contribution is methodological and technical: we have installed and tested the chain in house, and we have no Superset migration delivered for a client yet. We say so before starting, not after.

Frequently asked questions

What decision-makers ask about this path.

What are the drawbacks of Apache Superset?+

It depends on your organisation and on the maturity of your data teams. For a team with SQL-literate analysts and operating capacity, the constraints stay manageable. For an organisation whose business users build their own reports, the absence of a central semantic model weighs more heavily: each dashboard carries its own SQL, where Power BI shares its measures. Operating a platform made of several services adds to this, and the project maintains only its two latest versions. These constraints ease considerably once each metric is defined a single time in versioned SQL, which makes every output dependable. The ATLAS methodology builds that layer in from the scoping phase.

Superset or Metabase against Power BI, which one?+

It depends on how strictly your data must be partitioned. For a small team with no per-user confidentiality requirement, Metabase deploys quickly and suits less technical profiles. As soon as data must be partitioned by user profile, the free edition of Metabase reaches its limit: row and column security is reserved for its paid plans, self-hosting included. Apache Superset includes row-level security and offers finer access control, at the cost of more demanding operations. The choice therefore rests on your security model ahead of any interface preference. Our data architects establish it during the comparative audit.

Do you need to write SQL to use Apache Superset?+

It depends on each user's role. Reading a dashboard requires no technical skill: filters and exploration remain available to business teams. Building new dashboards calls for SQL, since Apache Superset relies on direct queries where Microsoft Power BI offers assisted modelling. This criterion determines who, within your organisation, keeps their autonomy. Once metrics are defined a single time upstream, business analysts reuse prepared datasets and their reliance on SQL falls markedly. Our data architects assess this point before any migration decision.

Can a Power BI report be converted automatically into a Superset dashboard?+

Automatic conversion does not exist: Microsoft Power BI visuals do not transpose as they are into Apache Superset. Each dashboard genuinely in use is rebuilt, after a short workshop with the business teams to confirm how it is used. This step is an opportunity to rationalise the reporting estate, as some legacy reports may no longer be consulted. The ATLAS methodology frames this rebuild with signed parity tests, which evidence that every metric returns the same result as before the migration.

Who operates Apache Superset once the migration is done?+

It depends on your in-house operating capacity. An organisation with an experienced platform team can run it itself. For organisations without one, the workload covers regular upgrades, monitoring, backups and tuning of the analytical database. The profile required is platform engineering rather than BI administration. Access International provides this operation over time with its nearshore teams, as a partner to your IT department. The operating model is defined during scoping, so that the decision to migrate accounts for the full running of the platform.

Why migrate Power BI to Apache Superset?+

It depends on your constraints, and migration is not always desirable. It is warranted when data sovereignty requires hosting on your own infrastructure, or when a large read-only audience makes per-user billing decisive. Outside these situations, Microsoft Power BI generally remains the sounder choice. Beyond the change of platform, migration is an opportunity to redefine metrics on a shared, versioned basis, and to open the reporting estate to artificial intelligence tools. The comparative audit establishes, before any commitment, whether migration is warranted in your context.

Is Apache Superset at Power BI's level?+

It depends on the criterion considered. Apache Superset offers a broad catalogue of charts and interactive dashboards. The difference lies mainly in modelling: Microsoft Power BI has a central semantic model and reusable measures, which Apache Superset offsets with a layer of metrics defined in SQL. On large volumes, performance depends on the analytical database behind Apache Superset. No independent public benchmark settles the comparison on that ground, and only a test on your own data gives a dependable answer. The comparative audit includes that test.

How much does a Power BI to Apache Superset migration cost?+

It depends on the scope genuinely involved. Cost is established from the number of dashboards actually in use and from how centralised the semantic layer is. A shared data model migrates far more efficiently than a multitude of local ones. Removing licences shifts the load towards operating the platform, which belongs in the analysis from the outset. Access International communicates no figure before scoping: the comparative audit produces an estimate grounded in your real reporting estate.

Can we keep Power BI and use Apache Superset alongside it?+

It depends on how your uses are distributed, and this coexistence can prove sound. Microsoft Power BI then keeps the everyday uses embedded in Microsoft 365, while Apache Superset takes on the dashboards bound by a sovereignty requirement. This hybrid architecture rests on one condition: both platforms must rely on the same metric definitions, failing which one metric would return two different results. Our data architects design that shared layer, which guarantees consistent figures whichever platform is consulted.

Considering a Power BI → Superset migration?

Three concrete ways to start — from a 3-week comparative audit to a full migration program. Our approach systematically begins with a documented Go/No-Go audit before any migration commitment, because outside the sovereignty/cost/on-premise cases, Power BI remains the right choice in most situations.

ATLAS methodology applied

From scoping to deployment, five structured phases.

Each phase aggregates one or more of the ten ATLAS steps. No phase starts until the previous one has delivered its validated artefact. The ATLAS methodology makes this migration predictable and auditable.

  1. 01Phase 1

    Comparative audit (3 weeks)

    ATLAS steps
    E1 Intake · E2 Discovery · E2b Functional spec

    Priority phase before any migration commitment. Analysis of existing Power BI estate (dashboard count, models, DAX measures, RLS, Premium capacities). Real usage measurement (Power BI Activity Logs). Evaluation of the 2 structural conditions: data sovereignty and the weight of the user base. Power BI Premium vs Superset self-hosted vs Preset Cloud 3-year TCO comparison. Signed Go/No-Go decision deliverable.

    Phase deliverable
    Comparative audit + signed Go/No-Go decision + migration scoping if Go
  2. 02Phase 2

    Migration scoping & target architecture

    ATLAS steps
    E3 Dependency mapping · E4 Target architecture

    If Go: target selection (self-hosted Superset, or Metabase — bearing in mind that its row and column security is reserved for paid plans, self-hosted included). Analytical database chosen by criterion rather than by threshold: PostgreSQL while a single service suffices, ClickHouse for columnar storage, Trino only to join sources no pipeline consolidates. RLS strategy (SQL views or Superset RLS). Model layer design (dbt recommended for governance as code).

    Phase deliverable
    Signed target architecture + RLS strategy + dbt plan
  3. 03Phase 3

    Model rebuild & business workshops

    ATLAS steps
    E2e Capture · E4b Pre-migration tests

    Model rebuild on database side: centralized SQL views, materialized tables for performance, dbt macros for reusable measures (DAX equivalent). 30 min per critical dashboard business workshops to redefine real need — no pixel-perfect attempt. Parity test suite preparation.

    Phase deliverable
    SQL/dbt model + validated business workshops + test suite
  4. 04Phase 4

    Dashboard migration & RLS

    ATLAS steps
    E5 Migration · E6 Parity validation

    Per-dashboard reconstruction in Superset with equivalent widgets (charts, filters, cross-filters drill-down). RLS configuration: filters in SQL views by user authenticated via Superset RBAC, or Superset RLS configured per dataset. Visual parity and security per user role tests. Performance tests.

    Phase deliverable
    Superset dashboards + validated RLS + signed parity tests
  5. 05Phase 5

    Cutover & decommissioning

    ATLAS steps
    E7 Delivery

    Progressive cutover user by user or department by department. Power BI ↔ Superset coexistence for 2-3 months (depending on criticality). Dated Power BI Premium decommissioning with savings measurement. End user and editor training. Ops handover to client team with documentation.

    Phase deliverable
    Superset platform in production + Power BI decommissioned + measured savings + autonomous client team