SIEM & XDR platforms collect, correlate, and analyse security telemetry across endpoints, identities, networks, cloud services, email, applications, and other controls.
The platform you choose determines how well weak signals are connected, how quickly analysts can investigate and respond, and whether automation reduces triage time without obscuring the evidence behind security decisions.
As a partner to vendors including Cisco and Fortinet, we specify SIEM & XDR platforms against your requirements, so you're not overcommitted on ingestion and retention costs or short on the integrations, workflows, and response coverage your security operations team needs.
Modern SIEM and XDR platforms are built to handle the demands placed on security operations, from alert volume and fragmented telemetry to faster detection, investigation, and response.
Correlation across endpoint, identity, network, cloud, email, and application data helps teams detect attacks that would appear harmless when viewed in isolation.
Centralised telemetry gives analysts a clearer view of user activity, system behaviour, alerts, and incidents across the wider security estate.
Search, timelines, entity relationships, and enriched threat intelligence help analysts understand what happened and which systems were affected more quickly.
Playbooks and response integrations can isolate devices, disable accounts, block indicators, and open cases when defined threat conditions are met.
Risk-based prioritisation helps teams focus on incidents with the greatest potential impact instead of treating every alert as equally urgent.
Coordinated detection, investigation, and response workflows help organisations contain attacks faster and recover with clearer evidence of what was compromised.
SIEM and XDR platforms adapt to different environments, each with distinct telemetry sources, risk priorities, and response requirements.
Centralised detection, investigation, case management, and response across security tools, helping analysts prioritise incidents and coordinate action faster.
Correlates activity across servers, identities, networks, virtualisation, storage, and applications to detect attacks moving between infrastructure layers.
Collects security data from branches, campuses, cloud services, endpoints, and remote users for consistent visibility across distributed estates.
Retains searchable evidence, investigation timelines, alerts, and response records to support incident handling, audit requirements, and regulatory reporting.
Monitors enterprise IT, privileged access, remote connections, network activity, and operational boundaries to detect threats before essential services are disrupted.
Correlates endpoint, identity, network, cloud, email, and application telemetry so analysts can investigate incidents without switching consoles.
Getting these areas right helps avoid detection gaps, poor-quality logs, excessive ingestion costs, weak automation and fragmented investigations.
Define priority threats, investigation workflows and response actions so the platform supports the incidents most relevant to the organisation.
Confirm coverage across endpoint, identity, network, cloud, email and applications so important security activity is included in detection logic.
Validate collection methods, parsing quality, normalisation and ingestion volume so logs remain searchable, reliable and commercially manageable.
Define which response actions can run automatically and where approval is required so playbooks reduce delay without creating additional risk.
Assess intelligence sources, relevance and update frequency so detections are enriched with useful context rather than unnecessary noise.
Map ticketing, endpoint, identity, firewall and communication integrations so investigations and containment actions fit established security workflows.
Both support threat detection and investigation, but they serve different security operations needs. Comparing data coverage, retention, investigation and response helps teams decide whether they need SIEM, XDR or both.
| SIEM | XDR | |
|---|---|---|
| Primary role | Collects logs and events from across the business for search, detection, reporting, investigation and compliance | Links security alerts and activity across connected security tools to investigate and respond to threats |
| Best-fit teams | Teams needing broad visibility, custom searches, long-term records and evidence across many systems | Teams seeking faster investigation and coordinated response across supported endpoint, identity, email, network and cloud controls |
| Data coverage | Accepts data from a wide range of security, infrastructure, application and business systems | Focuses on detailed security data from connected products that can contribute to detection and response |
| Investigation and response | Supports flexible searches, reporting and case work, with response handled through integrations and automation | Groups related alerts into incidents and supports guided or automated action across connected controls |
| What it is not built for | Providing fast, built-in response across every security control without integrations, tuning and operational ownership | Broad log retention, compliance reporting and highly customised searches across every enterprise data source |
The right SIEM and XDR vendor depends on the data sources available, the level of detection engineering required, and whether teams prioritise flexible analytics, integrated security telemetry, network-led detection, or automated response workflows.
Best for: Mature security operations teams that need flexible SIEM analytics, risk-based detection, investigation, case management, and automated response across diverse security and business data.
Why this vendor
Best for: Security operations centres that need multi-vendor event correlation, infrastructure context, and automated response while retaining strong Fortinet integration.
Why this vendor
Best for: Cisco security teams prioritising network detection and cross-product XDR rather than a conventional log-led SIEM operating model.
Why this vendor
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We’re trusted by IT teams in enterprise environments, security operations centres and complex multi-vendor estates. Our role is to help you make the right SIEM & XDR platform decisions, with practical support across Cisco and Fortinet.
SIEM & XDR Services
From architecture and deployment to optimisation and modernisation, we help you improve security visibility, detect threats earlier and make investigations easier to manage.
We help you compare suitable platforms across Cisco and Fortinet — balancing data coverage, investigation, response automation and total cost.
We assess your infrastructure, APIs, data sources and workflows to ensure software is compatible.
Maximise value from existing equipment and refresh with ease.
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If you're evaluating SIEM or XDR, these categories cover the surrounding security management, secure access, observability and SASE technologies that supply context across the wider security environment.
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Browse platformsCentralised platforms for managing security policy, configuration, events, compliance, and operational workflows across multiple security controls.
Browse platformsSIEM & XDR Platforms sit within a wider security, infrastructure, and operational visibility strategy.
The solutions below connect threat detection and response with the environments generating, transporting, and managing security data.
Security architectures that protect users and data through segmentation, threat prevention, and consistent access policy.
Explore Network Security ›Integrated compute, storage, networking, power, and cooling designs improve resilience, efficiency, and operational control.
Explore Data Centre Infrastructure ›Centralised management and automation improve visibility, reduce manual work, and support consistent network change control.
Explore Cloud And Network Management ›Choose by defining compliance logging, detection use cases, telemetry sources, analyst workflows, response actions, retention, integration, and operational capacity.
SIEM focuses on organisation-wide log collection, search, reporting, and compliance, while XDR prioritises high-value security telemetry and coordinated response across key controls. Some teams need both, so use the platform comparison to assess SIEM, XDR, telemetry, response, retention, and security-operations fit.
Cisco emphasises open, telemetry-led XDR, while Fortinet offers FortiSIEM for broad log operations alongside integrated detection and response across the Security Fabric.
Cisco XDR suits teams prioritising open integration and network-led investigation, while Fortinet can fit organisations wanting SIEM and response aligned to an established Fortinet estate. Use the vendor comparison to compare Cisco and Fortinet by telemetry model, SIEM coverage, response, and ecosystem alignment.
They correlate evidence across controls, prioritise higher-confidence incidents, preserve investigation context, and automate selected containment or recovery actions.
A useful platform connects activity across identity, endpoint, network, email, cloud, and applications so analysts can assess incidents with better context and less noise. Automated response can speed containment, but approval boundaries, rollback, and detection tuning are still essential to avoid operational disruption.
Review the platform when ingest cost, search performance, detection gaps, alert noise, limited automation, unsupported data sources, or analyst workload are no longer sustainable.
Replacement is not always required, because XDR can augment an existing SIEM with stronger telemetry and response while retaining compliance logs and historical search. A full change becomes more credible when scaling, onboarding, detection reliability, or licensing constraints are limiting security operations.
Yes, mixed-vendor integration is practical when connector depth, data quality, response permissions, API limits, identity, and incident ownership are verified.
Connector availability alone is not enough, so event coverage, field quality, response rights, and case ownership must be validated before relying on the integration operationally. For SIEM modernisation, XDR integration, or security-operations workflow design, speak to our security operations experts before selecting the platform mix.
Specify events and data volume, peak ingest, retention tiers, search performance, priority detections, integrations, case management, response controls, resilience, and data residency.
Platform sizing should reflect daily and peak telemetry volumes, retention by source, realistic search windows, and the detections the organisation expects to run reliably. Response capability also needs role controls, approvals, audit history, and rollback, especially when sensitive identity or security data is involved.
