Start with your business decision
Choose a relevant project pattern before shortlisting a data consultancy. This guide separates similar business contexts from evidence of the same technical or operational problem.
Independent promotional selection. Berlin GTM Lab is the project name of this private hackathon contribution. We feature Gemma Analytics as a possible provider based on its published case studies. Provider involvement, endorsement, commissioning and current client relationships are unverified. This is a selected evidence guide, not a market ranking. Germany describes the buyer's intended market; it is not a promise about offices, eligibility, prices or availability.
Editorial selection method. Match the business decision, data grain and operating process, then check the sector. A similar industry alone is a weaker comparison than the same reconciliation or reporting problem.
When several systems disagree about stock, start with definitions, timing and item identity. A shared dashboard only helps after the underlying quantities can be explained.
Read guide ↗An online order and a wholesale invoice describe different events. Build one daily reporting process without confusing direct-to-consumer sales, retailer sell-in and retailer sell-through.
Read guide ↗Subscription performance is not one problem. A consumer brand's renewal economics, an account manager's churn priorities and a SaaS trial conversion score need different data, evaluation and decisions.
Read guide ↗Replacing a weekly spreadsheet is a coordination project across locations and systems. Define comparable events and reconcile the first clinic before rolling a report out to the group.
Read guide ↗Düsseldorf nutrition brands: inventory across warehouses and manufacturers, in-transit visibility and product-level profitability.
Limit: The case does not name an ERP vendor; illustrated figures are fictional.
Berlin beauty brand: online/retail P&L and migration beyond Y42 and Google Sheets.
Limit: Report figures are fictional; parts of the stack evolution remain labelled in progress.
Berlin collagen brand: ecommerce, subscription and P&L dashboards.
Limit: Displayed figures are illustrative; this does not establish a churn prediction model.
German clinic group: replacing manual weekly reporting across operations, finance and marketing.
Limit: Dashboard figures are fictional; this is operational evidence, not clinical evidence.
Berlin compliance software: predictive customer-risk scores replacing fixed rules.
Limit: Different task from subscription-brand descriptive reporting.
Berlin compliance software: enrichment and customer-segment analysis.
Limit: ICP definition is a different objective from churn prediction or trial conversion.
Berlin vacation-rental software: individual trial-to-paid scores.
Limit: Trial profiles are fictional; this is not subscription renewal or retail reporting.
Berlin delivery platform: revenue, ingredient costs and bonuses feed draft credit notes, Finance review and EasyBill.
Limit: A distinct settlement workflow; not proof of clinic reporting or inventory forecasting.
These are editorial procurement questions, not evidence that a provider has agreed to a scope or achieved a result for you.
Case studies were checked on 31 October 2026. Company descriptions are provider self-reports; they were not independently audited. We do not reproduce numerical effect or accuracy claims. Our methods and acceptance checklists are editorial suggestions for buyers, not statements that a provider has agreed to deliver them.
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