Azure Application Insights - Summarize by part of timestamp
In Application Insights Analytics:
By hour:
requests | summarize count() by bin(timestamp, 1h) By day:
requests | summarize count() by bin(timestamp, 1d) By month
requests | summarize count() by bin(datepart("Month", timestamp), 1) By year
requests | summarize count() by bin(datepart("Year", timestamp), 1)