Notes on Revenue Operations, payments, forecasting and data analytics from Anthony Skolozdrzyk-Ardouin — Director of Revenue Operations & Data Analytics, Nexi Group.https://anthonysko.com/en-ushttps://anthonysko.com/blog/power-bi-design-model-first-then-calculation-groups/https://anthonysko.com/blog/power-bi-design-model-first-then-calculation-groups/A practical guide to Power BI design: star schema, calculation groups, field parameters and dashboard layout habits that keep reports fast and easy to maintain.Sun, 20 Sep 2026 15:00:00 GMThttps://anthonysko.com/blog/power-bi-copilot-what-it-can-and-cant-do_1/https://anthonysko.com/blog/power-bi-copilot-what-it-can-and-cant-do_1/What Copilot in Power BI does well, where it breaks, and how to test it on your own semantic model before business users start trusting its answers.Sun, 20 Sep 2026 12:29:00 GMThttps://anthonysko.com/blog/sales-forecast-accuracy-wape-bias-sandbagging/https://anthonysko.com/blog/sales-forecast-accuracy-wape-bias-sandbagging/Learn how to measure sales forecast accuracy with WAPE and bias, why a perfect team total can hide rep-level errors, and how to spot sandbagging in your data.Sun, 20 Sep 2026 12:24:00 GMThttps://anthonysko.com/blog/duckdb-for-analysts-local-analytics-without-a-warehouse/https://anthonysko.com/blog/duckdb-for-analysts-local-analytics-without-a-warehouse/Query CSV, Parquet and Excel files with plain SQL on your own machine using DuckDB. Practical examples, plus honest limits on concurrency and shared use.Sun, 20 Sep 2026 12:17:00 GMThttps://anthonysko.com/blog/git-github-llm-power-bi-dax-m-workflow/https://anthonysko.com/blog/git-github-llm-power-bi-dax-m-workflow/Save Power BI as text, version it in GitHub and connect an LLM to write DAX and M. Why this workflow changes how analysts build, review and trust their models.Sun, 20 Sep 2026 07:32:00 GMThttps://anthonysko.com/blog/why-ai-analysts-fail-on-bad-metric-definitions/https://anthonysko.com/blog/why-ai-analysts-fail-on-bad-metric-definitions/AI can write valid SQL in seconds, but it can't know which definition of revenue your CFO approved. Why a governed metrics layer matters, with benchmark data.Sat, 19 Sep 2026 18:11:00 GMThttps://anthonysko.com/blog/sql-window-functions/https://anthonysko.com/blog/sql-window-functions/Window functions keep your rows while you calculate across them. Learn ten patterns: ranking, deduplication, running totals, LAG, cohorts and streaks.Sat, 19 Sep 2026 10:06:00 GMThttps://anthonysko.com/blog/revops-benchmarks-2026-what-gartner-says/https://anthonysko.com/blog/revops-benchmarks-2026-what-gartner-says/RevOps benchmark reports are everywhere, but few show their sources. See what Gartner reports, how to vet a benchmark, and which metrics to track yourself.Sat, 19 Sep 2026 09:32:00 GMThttps://anthonysko.com/blog/cohort-based-revenue-forecasting-for-ecommerce/https://anthonysko.com/blog/cohort-based-revenue-forecasting-for-ecommerce/Learn to forecast e-commerce revenue from customer cohorts. Includes SQL, a worked backtest, and the common mistake that cost 9% forecast accuracy.Sat, 19 Sep 2026 09:05:00 GMThttps://anthonysko.com/blog/revops-data-quality-audit-10-point-checklist/https://anthonysko.com/blog/revops-data-quality-audit-10-point-checklist/Bad CRM data quietly breaks forecasts and reports. Use this 10-point revenue data audit with ready-to-run SQL checks to find and fix the biggest gaps.Sat, 19 Sep 2026 08:56:00 GMThttps://anthonysko.com/blog/network-tokens-authorization-rates-what-the-data-says/https://anthonysko.com/blog/network-tokens-authorization-rates-what-the-data-says/Do network tokens raise card approval rates? Compare Visa's 4.8% and Mastercard-cited 10.3-point figures, and learn why the numbers differ.Sat, 19 Sep 2026 08:07:00 GMThttps://anthonysko.com/blog/why-false-declines-cost-ecommerce-more-than-you-think/https://anthonysko.com/blog/why-false-declines-cost-ecommerce-more-than-you-think/False declines turn good customers away. See what the data says about their cost, why they happen, and how to measure and reduce them in e-commerce.Sat, 19 Sep 2026 08:02:00 GMThttps://anthonysko.com/blog/attribution-vs-incrementality-vs-mmm/https://anthonysko.com/blog/attribution-vs-incrementality-vs-mmm/Attribution, incrementality tests and marketing mix modeling answer different questions. Learn when to use each, with evidence from field experiments.Sat, 19 Sep 2026 08:01:00 GMThttps://anthonysko.com/blog/credit-card-decline-codes-explained/https://anthonysko.com/blog/credit-card-decline-codes-explained/What do Visa, Mastercard and Amex decline codes mean? A plain-English guide to the most common codes and what merchants should do next.Sat, 19 Sep 2026 08:00:00 GMT