In medicine as well as security, detecting a problem is not the same as detecting the problem. For example, although it's easy to identify a high fever, the presence of a fever does not clearly indicate a certain disease and, by extension, a course of treatment. The same holds true when diagnosing bot activity. You may be able to see a higher-than-usual volume of bot traffic, but that doesn't reveal bot intent or risk factors.
Download this report from Radware for a closer look at the top seven bot detection and mitigation considerations your security team should review.