Managed SIEM Services
A managed SIEM service means a provider deploys, tunes, and monitors your SIEM 24/7. Precursor operates Microsoft Sentinel and Elastic as SIEM platforms within its Managed SOC service, co-managed or fully managed, from £900 per month, with critical alerts investigated by a human analyst within 10 minutes. We do not sell SIEM as a standalone product: it is priced and delivered as part of the Managed SOC.
Managed SIEM means a provider operates, tunes, and monitors your SIEM platform 24/7. Precursor operates Microsoft Sentinel and Elastic as SIEM platforms within its Managed SOC service, co-managed or fully managed, from £900 per month.
What is managed SIEM?
The SIEM platform, operated inside our Managed SOC, not sold on its own.
Managed SIEM means a provider deploys, tunes, and monitors your SIEM 24/7 so alerts are actually investigated rather than left in a queue. Precursor operates Microsoft Sentinel and Elastic as SIEM platforms within its Managed SOC service, co-managed or fully managed, from £900 per month, with critical alerts investigated by a human analyst within 10 minutes.
We do not sell SIEM as a standalone product. If you want the wider context on how SIEM fits alongside MDR, SOC, EDR, and XDR, see our managed security comparison guide.
What managed SIEM actually covers.
A SIEM is a tool, not an outcome. Buying the platform without the operation behind it leaves you with a dashboard nobody watches. This is what runs inside the Managed SOC.
Co-managed or fully managed.
Both run on the same SOC tiers and the same Sentinel or Elastic backbone. The difference is who holds daytime control of the platform.
Your team keeps daytime control.
Co-managed SIEM lets your internal team keep control of the platform during business hours, with Precursor providing the 24/7 night, weekend, and holiday coverage plus deeper detection engineering. It is priced on the same tier model, scoped to the hours and log sources you want us to own.
We run the whole platform.
Fully managed SIEM hands the entire platform to Precursor: deployment, tuning, detection engineering, and 24/7 triage, all included in the monthly fee. This is the standard route for organisations with no in-house security team to hold daytime coverage.
Can we keep our existing SIEM?
Yes, on the platforms we support. We would rather say this plainly up front than have it surface at scoping.
- 01
Your data stays in your tenant.
We operate against Microsoft Sentinel or Elastic Cloud tenants held in your name, in the region you provision. We do not maintain a copy of your raw telemetry.
- 02
Sentinel and Elastic are the standard backbone.
The managed SIEM service assumes a Sentinel or Elastic platform. If you have neither, we deploy Microsoft Sentinel in a customer-owned tenant as part of the engagement.
- 03
A different SIEM is a conversation, not a standard offer.
If you run Splunk, Sumo Logic, or QRadar and want to keep it, talk to us first about scoping a custom engagement that fits your architecture. It is not a self-serve tier.
Priced via the Managed SOC tiers.
There is no separate SIEM licence line to negotiate. Managed SIEM is included in the same fixed monthly fee as the rest of the Managed SOC service.
Essential
50-100 users | Core log sources
Standard
100-500 users | EDR + cloud logs
Enterprise
500+ users | Multi-cloud estates
Full pricing breakdown, what drives the cost, and how managed SOC pricing compares to an in-house build: see our Managed SOC cost guide.
SIEM is one layer of a wider capability.
Precursor does not sell SIEM as a standalone product. Microsoft Sentinel and Elastic are operated as platforms within our managed SOC services, alongside managed EDR, threat hunting, and incident response, from a physical CREST-accredited SOC in Newcastle.
Tell us your SIEM, or lack of one.
Tell us whether you run Sentinel, Elastic, something else, or nothing at all. We will send back a fixed monthly quote for the right Managed SOC tier within five working days.
Managed SIEM: common questions.
Pricing, deployment, and how managed SIEM fits inside the Managed SOC.
A managed SIEM service is where a provider deploys, tunes, and monitors your SIEM platform on your behalf, so alerts are investigated by analysts around the clock rather than left in a queue. Precursor operates Microsoft Sentinel and Elastic as the SIEM platforms within its Managed SOC service, handling detection engineering and 24/7 UK analyst monitoring so the platform produces trustworthy alerts that are actually investigated.
SIEM is the platform layer we operate inside the SOC service, not a separate product. A SIEM collects and correlates log data and raises alerts; a SOC is the analyst team that tunes those detections, triages the alerts 24/7, and responds to confirmed threats. Precursor does not sell SIEM as a standalone product: Sentinel and Elastic are operated as part of the Managed SOC service, priced on the same SOC tiers.
Managed SIEM is priced through the Managed SOC tiers, not as a separate line item: from £900 per month for a small organisation up to £8,000-£12,000+ per month for a large enterprise.
- Essential: from £900/month for 50-100 users on core log sources.
- Standard: £3,000-£4,000/month for 100-500 users with EDR and cloud logs.
- Enterprise: £8,000-£12,000+/month for 500+ users across multi-cloud estates.
We provide a fixed monthly quote in writing after a free scoping call. There is no separate SIEM licence fee to negotiate.
Yes, on the platforms we support: we operate against Microsoft Sentinel or Elastic Cloud tenants held in your name.
- The standard managed SOC subscription assumes a Sentinel or Elastic backbone, with your raw logs and SIEM data living in your own tenant.
- If you run a different SIEM (Splunk, Sumo Logic, QRadar), talk to us first about scoping a custom engagement that fits your architecture. It is not a standard offering.
Most organisations are fully operational within 2-3 weeks, across four stages: scoping and contract signature, log connector deployment, log ingestion and baseline profiling, then detection rules tuned to your environment before 24/7 monitoring begins. Organisations with complex multi-cloud environments may need 4-6 weeks for full coverage.