Data & BI Architect
1Power BI tabular modeling (VertiPaq, DAX) AND SQL/dbt modeling on Superset side, target analytical stack design
Apache Superset vs Power BI: our data architects' analysis. Where Superset prevails, and where Microsoft Power BI remains the sounder choice.
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.
In most contexts, Microsoft Power BI is the sounder choice. Our data architects recommend it whenever one of the following situations applies.
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.
Apache Superset + PostgreSQL / ClickHouse / Trino, deployable on-premise
| Microsoft Power BI | Apache Superset | |
|---|---|---|
| Licensing model | Billed per user per month. | Apache 2.0 licence, no per-user cost. |
| Hosting | Hosted by Microsoft. An on-premises edition, Report Server, exists with a reduced scope. | Fully deployable on your own infrastructure. |
| Time to value | The service is operational from day one and security is taken care of. | A platform to install, secure and operate. |
| Modelling | Central semantic model and reusable measures. | Business logic written in SQL, structured in the database. |
| Ecosystem | Integrated with Microsoft 365, Excel and Teams. | Opens onto databases and open table formats. |
| Skills | Accessible to business analysts. | Requires SQL to build dashboards. |
| Best suited to | A Microsoft-equipped organisation seeking fast adoption. | An organisation that must retain control of its data. |
Billed per user per month.
Apache 2.0 licence, no per-user cost.
Hosted by Microsoft. An on-premises edition, Report Server, exists with a reduced scope.
Fully deployable on your own infrastructure.
The service is operational from day one and security is taken care of.
A platform to install, secure and operate.
Central semantic model and reusable measures.
Business logic written in SQL, structured in the database.
Integrated with Microsoft 365, Excel and Teams.
Opens onto databases and open table formats.
Accessible to business analysts.
Requires SQL to build dashboards.
A Microsoft-equipped organisation seeking fast adoption.
An organisation that must retain control of its data.
Maximum sovereignty, on-premise, tech-savvy data team. Mastered 100% open source stack.
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.
Simpler alternative to Superset for less technical teams. Less powerful on advanced SQL but smoother learning curve.
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.
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.
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.
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.
Migrating dashboards identically. Power BI visuals have their specifics (slicers, drill-through, native interactivity). Reproducing pixel-perfect in Superset frustrates users.
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.
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.
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.
Neglecting row-level security (RLS). Power BI has well-integrated native RLS. Superset offers mechanisms but requires more manual configuration.
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.
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.
Power BI tabular modeling (VertiPaq, DAX) AND SQL/dbt modeling on Superset side, target analytical stack design
Superset configuration, dashboards, RBAC, RLS, Python customs if needed, self-hosted or Preset deployment
Model reconstruction via SQL views or dbt, analytical database choice (PostgreSQL, ClickHouse, Trino, DuckDB), materialized tables
Per critical dashboard need-redefinition workshops, reconstructed dashboard validation, editor change management
Power BI RLS → SQL RLS + Superset RBAC mapping, per-user-role security parity tests
ClickHouse / Trino / PostgreSQL tuning, ingestion, indexing, dashboard performance monitoring
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.