Thank you for your answer Madhur. I understand classification is the ideal way to do this, and I have worked on it in the past. I am evaluating the Adobe implementation for a client, and currently they are passing campaign tags into props and evars. I am trying to understand the drawbacks of this method and if it is urgent that classification be used for campaign tracking.
Also, if we are using classification, we do have to update the campaign details manually for each campaign, using SAINT files, right?