Microsoft Sentinel SOC
Microsoft Sentinel SOC, run by Microsoft Gold partner UK senior analysts
A fully managed Microsoft Sentinel SIEM + SOAR service for UK mid-market enterprises. 24/7 UK senior analyst cover, KQL detection content tuned to your estate, end-to-end incident response, and Microsoft alliance escalation when you need it.
Free 30-minute Sentinel briefing · Microsoft Gold partner · ISO 27001 certified UK SOC
Median Sentinel alert triage time
Microsoft partner across 12 competencies
UK-staffed Sentinel SOC, every shift
Certified information security controls
The Sentinel reality
Microsoft Sentinel is powerful. Most UK teams cannot run it alone.
Three problems show up in every Sentinel SOC takeover we run. If any of these sound familiar, your current Microsoft Sentinel investment is leaking value.
Ingestion cost is spiralling
✕
Logs land in Log Analytics at unpredictable volumes. Monthly bills surprise the CFO. No one knows which tables to tier, archive or filter at ingestion to control cost.
✓
FinOps-led ingestion tuning. Most clients see 30-45% reduction in Sentinel cost within 90 days, with stronger detection coverage.
Detection content is generic.
✕
You deployed the analytic rule templates. They flood the queue with false positives. Real threats hide in the noise, and analyst attention burns out fast in UK SOCs.
✓
Custom KQL detections tuned to your estate. Microsoft Sentinel detection content library mapped to MITRE ATT&CK.
There is no one to triage at 2am
✕
Sentinel sends alerts to a Teams channel that no one watches out of hours. Critical incidents are noticed Monday morning, by which time dwell time has cost the business.
✓
True 24/7/365 UK senior analyst triage on every Sentinel alert. Median P1 acknowledgement under 4 minutes.
Four Sentinel-specific capabilities. One UK SOC team.
What our Microsoft Sentinel SOC service includes.
Sentinel deployment, FinOps-led tuning, custom detection content, 24/7 triage and incident response, delivered as one accountable service by Microsoft Gold partner UK senior analysts.
Sentinel deployment & onboarding
Live in <6 weeks
Workspace architecture, data connector configuration for Microsoft 365, Defender, Entra, Azure and third-party sources. Live within 21 days.
- M365, Defender XDR, Entra connectors
- Azure Resource + third-party sources
- Live in 21 days
Custom KQL detection content
100+ KQL rules
Detection content built and tuned for your estate. Microsoft Sentinel analytic rules, fusion alerts and ML rules, all mapped to MITRE ATT&CK.
- 90+ MITRE ATT&CK technique coverage
- KQL custom rules tuned per estate
- Fusion + ML + scheduled analytics
FinOps-led ingestion optimisation
-30% ingestion cost
Continuous review of Log Analytics ingestion. Tier, archive, basic-logs and ADX redirection. Typically saves clients 30-45% per month.
- Log Analytics tier review
- Archive + basic-logs + ADX redirect
- 30-45% typical cost reduction
Incident response with SOAR automation
50+ SOAR plays
Sentinel playbooks and Logic Apps automate triage, enrichment and containment. Human responders make the call. Hour-by-hour reports during live events.
- SOAR playbooks + Logic Apps
- Automated triage + enrichment
- Hour-by-hour incident reports
How we onboard Sentinel
Live Sentinel SOC cover in 21 days. Data connectors first.
A predictable three-phase onboarding so Sentinel is operational from week one, with detection coverage measured against MITRE ATT&CK from go-live.
01
Days 1 – 4
Deploy
Workspace + data connector setup (M365, Defender XDR, Entra, Azure Resource, third party). Baseline detection content. Cost-model baseline. Typically 14 days.
02
Days 5 – 10
Run
24/7 monitoring + triage by Microsoft Gold partner UK senior analysts. Custom KQL detection deployment. Weekly threat-hunt sprints. Monthly reports.
03
Day 11 onwards
Tune
Continuous FinOps-led ingestion tuning. Quarterly detection-coverage review. Annual programme review with your board, mapped to risk register.
Why Transputec
Four reasons UK security leaders choose us for Microsoft Sentinel SOC.
We are a Microsoft Gold partner with a UK-only SOC. Most clients save 30-45% on their Sentinel bill while improving detection coverage, within the first quarter.
01
Microsoft Gold partner
Direct Microsoft alliance escalation. Pre-release detection content access. Microsoft FastTrack engagement support included.
02
UK-only Sentinel SOC
No offshored L1. Every Sentinel alert triaged by UK-based senior analyst, under UK contract law and ISO 27001 governance.
03
FinOps-led cost reduction
Monthly ingestion review. Tier, archive, ADX redirect. 30-45% Sentinel cost reduction typical within 90 days, with stronger detection.
04
KQL detection content library
Pre-built KQL detection content covering 90+ MITRE ATT&CK techniques, tuned to your estate within the 21-day onboarding.
Trusted by UK Microsoft estates
UK enterprises that run Sentinel with our SOC.
Publishing, Azure-hosted Sentinel SOC
Property data, Azure AD + Sentinel managed service
Air freight, Microsoft-first cyber security
Cyber Security Services
Other Cyber Security Services from Transputec.
Microsoft Sentinel SOC sits inside our wider Cyber Security pillar. Most Microsoft-first clients combine Sentinel SOC with a vulnerability management programme, regular pentest, and full MDR.
← Back to Cyber Security ServicesMicrosoft Sentinel SOC FAQs
What UK security leaders ask before signing.
What is Microsoft Sentinel and why does it need a SOC?
Microsoft Sentinel is a cloud-native SIEM + SOAR platform built on Azure Log Analytics. It ingests logs from Microsoft 365, Defender XDR, Entra ID, Azure Resource and third-party sources, applies KQL detection rules, and orchestrates response through Logic Apps. It is powerful but operationally heavy: out-of-the-box content is generic, ingestion cost is unpredictable, and 24/7 triage is a separate problem. A Microsoft Sentinel SOC service handles all three under one fixed monthly fee. Our practice aligns with the Microsoft Sentinel documentation and the NCSC 10 Steps to Cyber Security.
Why a Microsoft Gold partner SOC versus a generic MSSP?
A Microsoft Gold partner has direct alliance escalation to Microsoft support, early access to pre-release Sentinel content, and access to Microsoft FastTrack engagement budget you can put against your deployment. Generic MSSPs run Sentinel as one of N platforms; we run it as a primary practice, and that focus shows in detection coverage. Read our deeper view on Managed SOC Services for mid-sized businesses.
How much does a managed Microsoft Sentinel SOC cost in the UK?
UK Microsoft Sentinel SOC pricing is typically per-GB-ingested-per-day plus a fixed SOC fee. Entry-tier (under 30 GB/day, 8×5 cover) starts around £3,800 per month all-in. Mid-market estates (50-200 GB/day, full 24/7/365 cover with KQL tuning) land between £8K and £28K per month. We publish a costed sizing in the SoW before contract signature, with no per-alert charges. For the wider threat-cost context, read our analysis of cyber threats facing UK businesses in 2026.
How will you reduce my Sentinel ingestion cost?
FinOps-led ingestion tuning typically saves clients 30-45% within 90 days, with no loss of detection coverage. We move noisy verbose-debug logs to Basic Logs, archive low-search audit data, redirect high-volume telemetry to Azure Data Explorer for long-term querying at fraction of Sentinel cost, and replace common templated rules with optimised KQL. See a real Azure-platform engagement in our Azure cloud migration case study for Incisive Media.
Can you manage Sentinel across multiple Azure tenants?
Yes. We manage Microsoft Sentinel across single-tenant, multi-tenant and Lighthouse-managed estates, including MSP-to-tenant delegated access patterns. We support multi-workspace deployments with cross-workspace queries and unified incident handling. See a real multi-cloud case study in our Azure migration case study for IPD, and explore the wider Cyber Security Services pillar for how Sentinel SOC integrates with our other capabilities.
Can you operate Microsoft Sentinel as an MSSP service?
Yes. As a Microsoft Solutions Partner for Security, Transputec operates Microsoft Sentinel on customer Azure tenants as a fully managed MSSP service. Your tenant, your data, your retention, your rules, our 24/7 UK analysts, content engineering, playbook tuning, ingestion-cost optimisation and incident response. We hold the on-call rota and the SOC platform; you keep the data sovereignty and the contract with Microsoft. See our managed SOC service for the wider context, or the Microsoft Sentinel documentation.
Ready to get more from Microsoft Sentinel?
Talk to a Microsoft Gold partner UK Sentinel analyst this week.
Free 30-minute briefing. We walk through your current Sentinel deployment, ingestion bill, and top three detection gaps, and give you a costed tuning plan. No deck. No sales pitch.
- Sentinel ingestion-cost audit with savings forecast
- Detection-content tuning blueprint within 14 days
- Indicative per-GB ingestion fee with FinOps embedded
- Prompt reply. ISO 27001 secure handling.