Sales Insight Dashboards Needed

I have several months of raw sales data sitting in mixed Excel/CSV files and a small SQL dump. I need that information cleaned, organised, and explored so we can finally see what the numbers are really telling us. After the data is trustworthy, I want to zero-in on three priorities: revenue trends over time, customer acquisition and retention behaviour, and sales performance broken down by region.

Power BI is my preferred canvas for the visuals. Please build an interactive dashboard that lets managers slice by date, product line, and region while keeping the layout simple enough for non-technical teammates. If you also know Tableau or advanced Excel, great, but the .pbix file is the deliverable that matters most.

Once the dashboard is live, I’ll need a short narrative (one-to-two pages) summarising the key findings you uncovered and any actions you recommend.

Deliverables
• Clean, well-documented dataset (Excel/CSV plus any SQL scripts used)
• Power BI dashboard (.pbix) covering the three KPIs above, ready for refresh
• Concise written summary of insights and next steps

Acceptance criteria: the dashboard refreshes without errors, all metric calculations reconcile with the source files, visuals load quickly, and the transformation steps are clearly commented.