Microsoft Sentinel: Cloud-Native SIEM, Expertly Managed
Apto Solutions helps UK organisations deploy, optimise, and operate Microsoft Sentinel. From workspace architecture to 24/7 managed detection, we turn Azure’s cloud-native SIEM into a powerful security operations platform.
What Apto Does with Microsoft Sentinel
We assess, build, and operate Sentinel environments end-to-end, helping organisations move from deployment through to mature, cost-effective security operations.
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Deployment & Architecture
Workspace design, multi-tenant configurations, and Azure Lighthouse integration. We build Sentinel environments that scale with your organisation and support complex tenancy models.
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Detection Engineering
Custom KQL analytics rules, workbook dashboards for operational visibility, and automated playbooks using Logic Apps. We build detections that matter and reduce alert noise.
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Data Connector Management
Integration of M365, Entra ID, Defender XDR, Azure Activity, and third-party sources. We ensure comprehensive visibility across your entire environment.
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Cost Management
Commitment tier analysis, Basic/Analytics/Archive log strategies, and data retention optimisation. We keep your Sentinel costs predictable and justified.
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Migration Support
From Splunk to Sentinel, from on-prem to cloud SIEM. We plan and execute phased migrations with zero security coverage gaps. Read our SIEM Migration Guide.
How Apto Manages Sentinel Day-to-Day
Our Operate engagement wraps around your Sentinel workspace, providing continuous management so your team can focus on security outcomes, not platform maintenance.
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24/7 Platform Monitoring
Continuous monitoring of Sentinel workspace health, ingestion rates, and system performance.
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Analytics Rule Management
Ongoing tuning, new rule development, and false positive reduction to keep detections sharp.
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Data Connector Health
Monitoring connector status, troubleshooting ingestion failures, and onboarding new sources.
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Cost Monitoring & Optimisation
Tracking ingestion volumes, managing commitment tiers, and recommending log tier strategies.
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Workbook Maintenance
Developing and maintaining dashboards and workbooks for operational and executive visibility.
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Regular Service Reviews
Scheduled reviews with detection roadmap planning, coverage assessments, and improvement recommendations.
Why Microsoft Sentinel for Your Organisation
Sentinel is the natural choice for organisations invested in Microsoft technologies. Here is why it works for mid-market organisations in the UK.
✔️Azure-Native Integration
Seamless integration with M365, Entra ID, and Defender XDR. No agents, no complex forwarding — data flows natively.
✔️Pay-As-You-Go Pricing
Consumption-based pricing with commitment tier discounts. Scale costs with actual usage, not fixed licences.
✔️Free Microsoft Data Ingestion
Several Microsoft data sources can be ingested at no additional cost, significantly reducing total SIEM spend.
✔️Powerful KQL Query Language
Kusto Query Language provides a powerful, flexible foundation for analytics rules, hunting queries, and reporting.
✔️Rapid Deployment
For M365 and Azure-heavy environments, Sentinel can be deployed and ingesting data within days, not months.
✔️Growing UK Mid-Market Adoption
Sentinel is rapidly gaining traction among UK mid-market organisations, with a strong community and ecosystem.
Apto’s Sentinel Credentials
We bring deep platform expertise and recognised credentials to every Sentinel engagement.
Azure Expertise
Deep knowledge of Azure security and management services
SIEM Migration Specialists
Proven SIEM-to-Sentinel migration experience
KQL & Analytics
Advanced KQL rule development and detection engineering
ISO 27001 Certified
Demonstrating our commitment to information security
On-Premises SIEM to Microsoft Sentinel
UK Organisation Migrates to Cloud-Native SIEM
MIGRATION SUCCESS
A UK organisation was running an ageing on-premises SIEM that was increasingly expensive to maintain and lacked modern detection capabilities. Apto assessed the existing detection coverage, designed a phased migration plan, rebuilt critical detections in KQL, and established an ongoing Operate engagement for the Sentinel workspace.
The migration was completed with zero security coverage gaps during transition, and the organisation now benefits from cloud-native scalability, integrated Microsoft threat intelligence, and Apto’s continuous Operate service.
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