Where can I find Microsoft Sentinel?

Excuse me, could you please clarify where exactly I can locate Microsoft Sentinel? I've been searching for it but haven't been able to pinpoint its exact location or access point. Is it a standalone platform, or is it integrated within another Microsoft service? Could you guide me through the steps to access it, or perhaps provide a direct link to its official page? I'm particularly interested in exploring its capabilities for security monitoring and incident response within my organization. Thank you in advance for your assistance.