Microsoft SIEM India — Sentinel Deployment & Managed SOC
Microsoft Sentinel is the AI-ready, cloud-native SIEM and SOAR platform built on Azure. Named a Leader in the 2025 Gartner Magic Quadrant for SIEM, Sentinel delivers threat detection, investigation, and automated response across multicloud environments. Ogma deploys, tunes, and manages Sentinel for Indian enterprises — with 350+ native connectors, KQL detection rules, SOAR playbooks, and 24×7 managed SOC operations.
Source: Forrester Total Economic Impact™ Study, commissioned by Microsoft
See Microsoft Sentinel in Action
Official Microsoft overview — how Sentinel modernizes SIEM for the future.
Microsoft Sentinel — Platform Capabilities
An AI-ready SIEM platform that unifies data, detection, investigation, and response.
Unified Security Data Lake
Cloud-native data lake with tamper-proof, append-only storage. Ingest terabytes of security data across users, devices, applications, and infrastructure — on-premises and multicloud (Azure, AWS, GCP). Auto-scaling with geo-redundant storage eliminates capacity planning.
350+ Native Connectors
Connect Microsoft 365 Defender, Entra ID, FortiGate, Cisco ASA, CrowdStrike Falcon, Palo Alto, AWS CloudTrail, GCP Audit, and custom CEF/syslog sources. Codeless connector framework lets you deploy custom integrations without writing code. M365 E5 customers get free ingestion for Microsoft data.
KQL Analytics & Detection Engine
Kusto Query Language powers scheduled analytics rules, near-real-time (NRT) rules, and anomaly detection. Out-of-the-box rule templates cover credential spray, lateral movement, ransomware precursors, privilege escalation, and data exfiltration. MITRE ATT&CK coverage mapping visualizes detection gaps.
Built-in SOAR Automation
Logic Apps-based playbooks automate tier-1 response: isolate endpoints in MDE, block IPs in FortiGate, disable accounts in Entra ID, create ServiceNow tickets, notify SOC via Teams — triggered automatically on high-confidence alerts. 300+ pre-built Logic App connectors available.
UEBA & Anomaly Detection
User and Entity Behavior Analytics builds statistical baselines for every user and device. Detects anomalous logins, impossible travel, excessive data access, and admin activity deviations without signature rules. Enriches incidents with risk scores and timeline views for faster investigation.
Threat Intelligence & Hunting
Integrate threat intelligence feeds from Microsoft, TAXII 2.0 sources, and custom IOCs. Jupyter notebooks in Azure Machine Learning enable advanced hunting with Python ML libraries. Proactive hunting queries based on the MITRE framework surface threats before alerts fire.
Data Connector Ecosystem
Sentinel connects to your entire security stack — Microsoft, third-party, and custom sources.
| Source Category | Examples | Ingestion Method | Cost Impact |
|---|---|---|---|
| Microsoft 365 / Defender XDR | M365 Defender, Entra ID, Exchange, SharePoint | Free via M365 E5 connector | Free (M365 E5) |
| Azure Services | Azure Activity, AKS, Key Vault, Storage, NSG Flow | Built-in (Azure Monitor) | Low-Medium |
| Firewalls (Fortinet/Cisco/PA) | FortiGate, ASA, PA-OS, Check Point | CEF/Syslog via AMA | Medium-High |
| Endpoint Security | CrowdStrike Falcon, SentinelOne, Carbon Black | API connector | Medium |
| Identity & Access | Active Directory, Okta, Ping, CyberArk | API / Syslog connector | Medium |
| Cloud Platforms | AWS CloudTrail, GCP Audit, Oracle Cloud | S3 / Pub-Sub / API | Medium |
| Custom / On-prem Apps | Any RFC 5424 syslog, custom REST API | Syslog via AMA / Codeless connector | Variable |
| Threat Intelligence | Microsoft TI, TAXII 2.0, MISP, custom IOCs | TI connector / API | Low |
Ogma's Microsoft SIEM Services
End-to-end Sentinel services — from workspace deployment to 24×7 SOC operations.
Sentinel Deployment
Workspace setup on Azure, data retention and commitment tier configuration, cost modelling, and initial connector deployment (M365, Entra ID, Azure Activity, Windows Security Events). Includes analytics rule library and custom workbook dashboards. Production-ready in 2–4 weeks.
SIEM Migration
Migrate from Splunk, QRadar, ArcSight, LogRhythm, or any on-prem SIEM to Sentinel. Ogma maps existing correlation rules (SPL/AQL) to KQL analytics, migrates dashboards to Sentinel workbooks, validates detection parity, and manages the parallel-run cutover window.
Managed SOC on Sentinel
24×7 incident monitoring, alert triage and investigation, weekly threat hunting, analytics rule tuning, SOAR playbook lifecycle management, and monthly executive security reports. Ogma's SOC analysts work as an extension of your security team with defined SLAs.
Cost Optimization
Sentinel costs scale with data ingestion volume. Ogma optimizes: commitment tier selection (up to 65% savings), Basic vs Analytics log tiers, data filtering at source, table-level retention policies, and connector prioritization — typically reducing ingestion costs 30–50% vs unoptimized deployments.
KQL Detection Engineering
Custom KQL analytics rules tuned for your environment. Ogma's detection engineers develop rules for credential attacks, lateral movement, privilege escalation, data exfiltration, and insider threats — with false positive tuning and MITRE ATT&CK mapping for coverage visibility.
Compliance & Reporting
Pre-built workbooks for RBI Cyber Security Framework, SEBI CSCRF, CERT-In incident reporting, DPDPA 2023, PCI DSS, and ISO 27001. Custom executive dashboards, incident trend analysis, and audit-ready compliance reports with configurable retention (90 days hot + 2 years archive).
How Ogma Deploys Microsoft Sentinel
Discovery & Scoping
Ogma audits your current security stack, identifies data sources, maps compliance requirements (RBI/SEBI/CERT-In), and models expected ingestion volumes to recommend the optimal Sentinel architecture and commitment tier.
Workspace & Connector Setup
Deploy the Log Analytics workspace on Azure with appropriate retention tiers. Deploy connectors in priority order: Microsoft 365 Defender (free for E5) first, then Azure services, then firewall CEF/syslog via Azure Monitor Agent, then third-party API connectors.
Detection Rule Engineering
Develop and tune KQL analytics rules — starting from Microsoft's template library and extending with custom rules for your threat model. Map detections to MITRE ATT&CK. Build near-real-time (NRT) rules for critical alerts and scheduled rules for behavioral patterns.
SOAR Playbook Deployment
Design and deploy Logic Apps playbooks for automated tier-1 response: account lockout, endpoint isolation, IP blocking, ticket creation, and SOC notification. Define escalation paths and human-in-the-loop triggers for high-impact actions.
SOC Onboarding & Go-Live
Integrate Sentinel with your ticketing system (ServiceNow, Jira). Define incident severity matrix, escalation workflows, and SLAs. Begin 24×7 monitoring with Ogma's managed SOC team. Monthly security reviews and quarterly rule tuning included.
Microsoft Sentinel vs Splunk vs QRadar
Ogma deploys all three — we recommend based on your stack, budget, and compliance needs.
| Capability | Microsoft Sentinel | Splunk ES | IBM QRadar |
|---|---|---|---|
| Deployment | Cloud-native (Azure) | Cloud or on-prem | Primarily on-prem |
| Pricing Model | Pay-per-GB ingested | Workload / Ingest Volume | EPS-based |
| M365 Integration | Native (free M365 E5 data) | Add-on (TA for O365) | Add-on DSM |
| SOAR | Built-in (Logic Apps) | Separate product | Separate (Resilient) |
| UEBA | Built-in (free) | Separate product | Separate module |
| XDR Integration | Native (Defender XDR) | Via add-on | Via QRadar Suite |
| Query Language | KQL (Kusto) | SPL (Search Processing) | AQL |
| Connectors | 350+ native | 300+ (Technology Add-ons) | 450+ DSMs |
| AI / ML | Security Copilot integration | AI Assistant (preview) | Watson AI |
| Infrastructure | Zero servers | Indexer cluster required | Appliances required |
| India Compliance | RBI, SEBI, DPDPA, CERT-In | RBI, SEBI, DPDPA, CERT-In | RBI, SEBI, DPDPA, CERT-In |
| Gartner MQ 2025 | Leader | Leader | Niche Player |
Ogma is vendor-neutral. We deploy both Microsoft Sentinel and Splunk ES and recommend based on your existing stack, Microsoft licensing, data volumes, and compliance requirements.
Industry Recognition
Gartner Magic Quadrant
Named a Leader in the 2025 Gartner Magic Quadrant for Security Information and Event Management (SIEM).
Forrester Wave™
Named a Leader in the Forrester Wave™ for Security Analytics Platforms, Q2 2025.
Forrester TEI Study
44% lower costs vs legacy SIEM, 79% reduction in false positives, 35% reduction in breach likelihood.
Why Choose Ogma for Microsoft SIEM?
Microsoft CSP Partner
Ogma is an authorized Microsoft Cloud Solution Provider. INR billing, GST invoices, and direct Microsoft licensing support for Sentinel, M365 E5, and Azure consumption.
KQL Detection Library
Ogma maintains a library of tuned KQL analytics rules for Indian enterprise environments — adapted from real threat intelligence, VAPT findings, and red team engagements across 19+ enterprise clients.
24×7 Managed SOC
Round-the-clock incident monitoring, alert triage, threat hunting, and escalation with defined SLAs. Monthly security posture reports and quarterly detection rule reviews included.
Multi-Vendor Expertise
Ogma deploys Sentinel, Splunk, and QRadar. We also sell Fortinet, CrowdStrike, and Cato — so we integrate your entire security stack into Sentinel, not just Microsoft products.
Frequently Asked Questions — Microsoft SIEM India
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Ogma evaluates your current security stack, data sources, compliance requirements, and Microsoft licensing — and delivers a Sentinel deployment architecture with projected ingestion costs and ROI analysis. No obligation.
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