While there is little doubt that SIEM solutions are critical for compliance, security monitoring or IT optimization, it is getting harder for buyers to find the right product for their needs, especially given the number of solutions available and the different options for implementation (i.e. software, hardware, cloud, outsourced, co-managed, etc.)
Choosing the wrong solution can be expensive, arduous to maintain, and difficult to staff for constant monitoring, which is why many SIEM installations end up as shelfware.