title: Difference between Ilog and TelemetryClient for logging details in Application Insights
body: <p>I am using Azure function app v3 and I want to log details into Application Insights.
  There is by default ILogger in function app. what is the difference between <code>Ilogger</code> and <code>TelemetryClient</code> to log details into App Insights. which is the best way to log details?</p>
  <p>Any response is appreciated, Thanks in advance.</p>