Splunk to Microsoft Sentinel Migration

Splunk to Microsoft Sentinel

Enterprise Security Modernization Capabilities

Helping enterprises transition from legacy SIEM platforms to a modern, cloudnative security foundation

The Challenge
Many large enterprises, particularly in regulated and assetintensive industries are reaching an inflection point with traditional SIEM platforms like Splunk. Rising data ingestion costs, operational complexity, and limited native integration with cloud and identity platforms are driving organizations to reevaluate their security architecture.

At the same time, security teams are under pressure to improve detection, response, and visibility across increasingly hybrid environments, without expanding tooling sprawl or operational overhead.

Why Modernize Your SIEM with Microsoft Sentinel?

Legacy SIEM platforms like Splunk often struggle to keep pace with today’s evolving security threats and compliance requirements.

Microsoft Sentinel is a cloud-native SIEM and SOAR platform built to support modern enterprise security needs:

> Native integration across Microsoft Defender, Entra ID, Microsoft 365, Azure, and third-party data sources
> Scalable, usage-based architecture designed for cloud and hybrid environments
> Advanced analytics and automation to accelerate detection and response
> Lower total cost of ownership compared to legacy SIEM platforms
> Recognized as a Leader in the 2024 Gartner® Magic Quadrant™ for SIEM

For organizations already invested in the Microsoft ecosystem, Sentinel becomes a natural extension of their security strategy rather than another disconnected tool.

Why Quisitive

Quisitive goes beyond tool deployment to help enterprises modernize security operations with intention, scale, and measurable outcomes. Our approach is designed specifically for organizations transitioning away from legacy SIEM platforms like Splunk, where cost control, operational maturity, and longterm sustainability matter as much as the technology itself.

What differentiates Quisitive:

> Migration-first SIEM modernization

We specialize in helping organizations plan and execute deliberate exits from legacy SIEM platforms, translating existing detections and workflows while modernizing architecture for cloud-native operations.

> Identity- and signal-driven security posture

Our Sentinel implementations are built around native Microsoft signals across identity, endpoint, cloud, and application layers, reducing alert noise and improving
threat context.

> Cost-aware design and optimization

We help customers rationalize ingestion, retention, and detection strategies to control SIEM costs and avoid simply recreating legacy spend models in a new platform.

> Enterprise-scale delivery experience

Our teams support complex, multi-year security transformation programs across regulated industries, combining advisory, implementation, and managed services
under a single delivery model.

This approach enables customers to modernize with confidence without disrupting operations or sacrificing security outcomes.

Our Approach

Rather than treating SIEM migration as a one-time tool replacement, Quisitive applies a structured, enterprise-ready approach:

1. Assess & Align
Evaluate current SIEM usage, cost drivers, detection coverage, and operational maturity.

2. Map & Modernize
Translate Splunk use cases, detections, and workflows to Sentinel while identifying opportunities to simplify and modernize.

3. Integrate & Optimize
Leverage native Microsoft signals across identity, endpoints, cloud, and applications to reduce noise and improve response.

4. Operationalize at Scale
Enable long-term success through governance, automation, and managed security services.

This framework allows organizations to migrate with confidence - while improving security outcomes and operational efficiency.

The Outcome
Organizations partnering with Quisitive gain more than a SIEM migration, they establish a measurable, future-ready security foundation built on outcomes such as:

> Reduced total SIEM costs and higher ROI