Lesson 1 of 6
Why SAP rebuilt its data stack: from BW to Business Data Cloud
11 min
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Contoso Motor Co. is live on SAP S/4HANA Cloud Private Edition after its conversion from SAP ECC 6.0. The CFO now asks a question that sounds simple: "Why do we have three places that show revenue, and which one is right?" Margin by customer appears in a Fiori analytical app in CMP, in an SAP BW 7.5 query that finance has used for ten years, and in a spreadsheet that Dan, the finance process owner, rebuilds every month. Noor, Contoso's data and analytics lead, has been asked to explain where SAP's data and analytics products are going and what Contoso should do about it. This course follows her.
To answer, you need the history. For two decades SAP's answer to "analytics on ERP data" was SAP Business Warehouse (BW): extract data from the ERP with DataSources, stage it, transform it, store it again in InfoProviders and report on it with BEx or Analysis for Office queries. BW was reliable and well governed, but every new question meant a new flow, and the data was a copy of a copy, often a day old.
Every one of those boxes had to be designed, transported and tested by the customer, and every new business question usually meant another arrow. When SAP S/4HANA arrived with its own real-time analytics on CDS views, many companies ended up with two parallel worlds: operational reports inside the ERP and strategic reports in BW, each with its own definitions. The CFO’s three revenue numbers are a symptom of exactly that history.
Four generations in one diagram
SAP then built SAP BW/4HANA (2016), a HANA-only and simplified BW, and in 2019 a cloud data warehouse, SAP Data Warehouse Cloud, renamed SAP Datasphere in 2023. Customers still had to move and model ERP data themselves. In February 2025 SAP announced SAP Business Data Cloud (BDC): one fully managed SaaS offering that brings SAP Datasphere, SAP Analytics Cloud, SAP BW (including its private cloud edition) and SAP Databricks together, and adds SAP-managed data products that SAP itself extracts and maintains from SAP applications. At SAP Sapphire in May 2026, SAP called BDC the data foundation of the new SAP Business AI Platform and named SAP HANA Cloud and SAP Master Data Governance as core BDC components.
What changed in the idea, not just the product names
| Question | BW era answer | BDC answer |
|---|---|---|
| Who builds the extraction from SAP applications? | The customer, flow by flow | SAP, for SAP-managed data products; the customer for its own data |
| What is the unit of reuse? | An InfoProvider inside one BW system | A data product: a described, governed dataset others can discover and consume |
| Where does non-SAP analytics happen? | Data is exported, usually as files | Zero-copy sharing through BDC Connect, where supported |
| Who consumes the data? | Reports and planning | Reports, planning, machine learning and AI agents |
| Who runs the platform? | Customer IT and Basis | SAP, as a managed cloud service |
The shift is from building pipelines to consuming and publishing data products.
Why it matters to people who sign things off
For a tester or process owner, the important change is that numbers will increasingly be produced outside the transaction system. A margin figure in an SAP Analytics Cloud story may come from a data product that SAP refreshed, a model a data team built, and an AI agent that summarized it. If nobody can prove where the number came from, nobody should sign it off. That is the thread through this course and the reason for the testing course that follows it (sap-dap-301).
What would you do?
In her first steering meeting, Grace, the PMO lead, asks Noor: "Is BDC just Datasphere with a new name, so we can ignore it?" What is the best answer?
- AskThe CFO asks which revenue number is right
- TraceNoor lists every place margin is calculated: Fiori app, BW query, spreadsheet
- CompareShe reconciles the three for one month and explains each difference
- DecideSteering agrees which layer owns which kind of question
- SAP moved from BW (build every pipeline) to BDC (consume and publish governed data products).
- BDC, announced in February 2025, bundles SAP Datasphere, SAP Analytics Cloud, SAP BW private cloud edition and SAP Databricks as a managed SaaS.
- At Sapphire 2026 SAP called BDC the data foundation of the SAP Business AI Platform.
- Statuses change fast: date every claim and re-check after SAP events.
Check your understanding · not graded
Lesson check
1. Which statement best describes SAP Business Data Cloud?
2. What was SAP Datasphere called before 2023?
3. Which is the biggest change in operating idea from BW to BDC?
4. Why should a process owner ask for the lineage of one key figure before signing off a new analytics source?