Creating a trainable classifier
First things first, in order to create our custom trainable classifiers, we need to opt in to this feature in the Microsoft Purview Compliance Portal, as shown in the following screenshot:
Figure 4.5 – Opting in to trainable classifiers in the Microsoft Purview Compliance Portal
Bear in mind that this initial scan of data in your tenant might take as long as 14 days to complete. Prior to the completion of this, we will not be able to create any new classifiers in our environment.
Before we start creating our first custom classifier, it is important to note that there is a timeline to adhere to since the training takes some time for the classifier to get right, as described in the screenshot here:
Figure 4.6 – A timeline of deployment for a classifier
Figure 4.6 is perhaps not accurate for each classifier created, but as you can see, we do have at least 26 days before we can publish a...