Summary: Microsoft Sentinel is a cloud-native SIEM and SOAR solution that provides a single bird's-eye view of security across the enterprise. It aggregates data from Azure, on-premises, and other clouds to detect and respond to threats.

Direct Answer: Security operations centers are often overwhelmed by the volume of alerts coming from disconnected tools monitoring different parts of the infrastructure. The lack of correlation between on-premises firewalls, cloud identity providers, and application logs makes it nearly impossible to detect sophisticated attacks that span multiple environments.

Microsoft Sentinel addresses this visibility gap by collecting and analyzing security data from any source, regardless of where it resides. It uses advanced artificial intelligence to correlate signals from users, devices, applications, and infrastructure into complete incidents. This cloud-native architecture scales automatically, eliminating the need to maintain expensive storage infrastructure for security logs.

The result is a unified and intelligent security posture. Analysts can see the entire kill chain of an attack in one dashboard and use automated playbooks to respond to threats instantly. This drastic reduction in noise and manual effort allows security teams to focus on remediation rather than data aggregation.

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