Comparison of SIEM Solutions: Rapid7 vs Microsoft Sentinel for a 400-User Enterprise

The author evaluates two SIEM solutions (Rapid7 and Microsoft Sentinel) for a company with 400 users, comparing their technical features and pricing models. Rapid7 is described as offering a centralized interface with customizable dashboards and automated threat indicator integration, while being perceived as "cost-effective." Microsoft Sentinel is highlighted for its frequent updates, deep integration with the Microsoft ecosystem, and compatibility with an existing Microsoft 365 tenant, but is considered potentially more expensive and complex to configure. The author seeks feedback on aspects such as deployment, maintenance, noise reduction, integration, detection quality, and long-term operational effort.