Welcome to Day 15 of the 21-Day DAX Challenge!

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Today’s focus:
Which customer placed the most orders in a single month?

We’ll solve it with a clean, step-by-step DAX logic that combines:
1. Time-based grouping (Year-Month)
2. Customer-wise aggregation
3. MAX logic to detect the peak
4. LOOKUPVALUE to fetch the customer name

Result: Warren Buffett was the top monthly customer!

Catch up on the full 21-day challenge here:
https://www.youtube.com/watch?v=3mLHXl5NLPc&list=PL6Omre3duO-Nrn_V_qnKEp79dXLolDKU9&index=15

⏱ Timestamps:
0:08 - Welcome to Day 15: Time + Customer analysis
0:18 - Business Question Explained
1:01 - Step 1: Virtual table with Customer ID, YearMonth, Order Count
3:23 - Step 2: Get MAX order count
3:56 - Step 3: Filter rows with highest order count
4:26 - Step 4: Extract Customer ID
5:02 - Step 5: Use LOOKUPVALUE to get customer name
5:48 - Final Answer: Warren Buffett
6:03 - Use cases: Peak engagement, Active client
6:17 - Coming up in Day 16: Highest average order by employee


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