I am not saying that no marketing campaign works, I am saying that not all of it is effective, and that companies should be at least interested in finding out w

I am not saying that no marketing campaign works, I am saying that not all of it is effective, and that companies should be at least interested in finding out whether their own marketing department is helping the business. I don't understand how anyone takes "email click rate is high" as a definite signal that the whole effort is beneficial and worth the money. This is similar to hiring a cloud team and getting reports that "CPU utilization is high" across the VMs. Of course using the cloud makes sense for a variety of companies, but if this is the only metric you use to know whether your cloud team is beneficial to the business, you really have no idea.