Comprehensive and Detailed Explanation:
Correct answers are A and B.
* A - Large Data Extensions are required when handling tens or hundreds of millions of records.
Regular Data Extensions have performance limitations.
* B - Knowing the expected hourly API call volume is essential because Marketing Cloud has strict API rate limits. Bulk API usage must be planned carefully.
# Why others are wrong:
* C: While time of day matters for planning, it's not a discovery priority over licensing and scaling factors.
* D: While it's useful to know why they need 10 years of data, the technical feasibility depends first on license and API planning.
Exact Extract from Salesforce Official Documentation:
Salesforce Help - Large Data Extensions and API Limits:
"Use Large Data Extensions when working with millions of records to maintain performance. Understand API rate limits to ensure compliance with Marketing Cloud API usage policies." (Source: https://help.salesforce.com/s/articleView?id=sf.mc_es_large_data_extensions.htm)
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