When does building GRC make sense?

Building is viable for organizations with a single compliance framework and the ops depth to run a self-hosted platform. CISO Assistant and Eramba are production-ready open-source alternatives covering risk registers and compliance tracking for teams willing to manage their own infrastructure.

When does buying GRC make sense?

Buying earns its keep when you need to cover multiple frameworks simultaneously. Vendors like Vanta and Drata carry pre-built framework content across SOC 2, ISO 27001, HIPAA, and PCI with automated evidence collection that cuts audit prep significantly — the more frameworks, the more the content library justifies the license.

What are the main GRC vendors?

Representative vendors include ServiceNow GRC, Vanta, Drata. B4 Pro scores the full set.

How is AI changing GRC?

AI is automating evidence collection and control validation — tasks that previously required significant manual work. This is making GRC more accessible at the mid-market level, reducing the implementation cost of commercial platforms and improving the viability of open-source alternatives.

Security & Compliance · Engineering, IT & AI

Should you build or buy GRC?

Governance, Risk, and Compliance (GRC) software provides a structured framework for managing an organization's compliance obligations, risk register, control library, policy management, and audit evidence collection. It maps internal controls to regulatory frameworks like SOC 2, ISO 27001, HIPAA, and PCI, tracks remediation workflows, and produces audit-ready documentation.

The build-vs-buy decision for GRC turns on how many regulatory frameworks you need to cover simultaneously and whether AI-driven evidence automation or open-source platforms like CISO Assistant can handle your compliance scope without the framework-mapping investment that commercial platforms provide pre-built; the specifics decide it.

Domain: Security & Compliance
Function: Engineering, IT & AI
Industries: Cross-industry

Last assessed June 2026 · re-scored quarterly via The Continuum.

Build it, buy it, or bridge?

	Build it	Buy it	Bridge (buy, then extend)
Cost shape	CISO Assistant and Eramba are free OSS; full custom GRC stack covering multiple frameworks costs $1M+/yr	Legacy GRC TCO inflated ~40% in three years; modern Vanta/Drata pricing modest vs. legacy Archer	OSS for risk and audit core; commercial for multi-framework compliance content library
Time to value	Weeks for CISO Assistant; months for custom control workflows; years for multi-framework coverage	Vanta and Drata claim fast time-to-SOC-2 with pre-built control libraries and automation	OSS core running quickly; commercial content library for compliance deadlines
Differentiation captured	Compliance data as AI input for risk decisions; but GRC itself is cost-of-business, not competitive weapon	Pre-built framework mappings across SOC 2, ISO, HIPAA, PCI; automated evidence collection	Internal risk modeling; vendor-provided framework content and auditor workflow
AI feasibility today	CISO Assistant (3,600+ stars), Eramba cover risk registers and compliance tracking in production; multi-framework coverage requires custom build	AI automating evidence collection and control validation; Vanta/Drata significantly reducing audit prep time	OSS handles framework you know; buy content for frameworks you're adding
Who it fits	Single-framework compliance orgs with ops depth to self-host and run control workflows	Orgs with three or more concurrent frameworks, growing SaaS vendor footprints, or compliance deadlines	Organizations adding frameworks to existing GRC coverage without starting over

The B4 call

B4 has a verdict for GRC.

Build, Buy, Bridge, or Beware, with the five-dimension scorecard and the reasoning behind it. Unlock the call, and every other category, with B4 Pro.

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When building GRC makes sense

Building your own GRC infrastructure is most defensible when your compliance obligations are narrow — a single framework like SOC 2 Type II — and your team has the security and operations depth to run a self-hosted platform reliably. CISO Assistant has over 3,600 GitHub stars and covers risk registers, compliance frameworks, and audit management in documented production deployments. Eramba provides similar coverage for teams willing to self-host. The case gets stronger as AI begins automating the evidence collection and control validation work that used to require commercial platforms to do economically. For organizations with a small vendor footprint and a single compliance target, maintaining the framework mapping yourself is a tractable problem. The constraint is regulatory breadth: building the cross-mapping logic that covers SOC 2, ISO 27001, HIPAA, and PCI simultaneously requires building and maintaining the compliance content library — work that commercial vendors have already done and certified.

When buying GRC makes sense

Buying GRC earns its keep as regulatory breadth grows. Platforms like Vanta and Drata carry pre-built content libraries across SOC 2, ISO 27001, HIPAA, and PCI, with automated evidence collection from cloud providers and SaaS integrations that reduce audit prep from months to weeks. The more frameworks you need to satisfy simultaneously, the more the vendor's library offsets the license cost. AI is disrupting the top of the market — evidence automation is eating into the project-intensive work that justified expensive implementations — which is actually creating a more competitive mid-market. The buy case also strengthens as your SaaS vendor footprint grows, because continuous control monitoring across dozens of third-party tools is where custom GRC stacks quickly become unwieldy. ServiceNow GRC serves the enterprise end of the market where GRC is deeply integrated into broader IT governance workflows.

GRC software is getting disrupted from two directions at once. AI is automating the evidence collection and control validation work that used to justify expensive implementation projects, and open-source platforms like CISO Assistant and Eramba have matured to cover risk registers, compliance frameworks, and audit management for teams willing to self-host. The build case gets serious when your compliance obligations are narrow and your team has the security and ops depth to run a self-hosted stack reliably.

Buying earns its keep when regulatory breadth is wide. Covering SOC 2, ISO 27001, HIPAA, and PCI simultaneously in a self-built system means building and maintaining the framework mappings yourself, and that's where platforms like Vanta and Drata justify their price. The more frameworks you need to satisfy simultaneously, the more the vendor's pre-built content library offsets the license cost. Teams with a single compliance target and a small vendor footprint have a plausible path to owning this layer themselves.

Representative vendors

ServiceNow GRCVanta and 1 more, scored in B4 Pro

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Frequently asked

What is GRC software?: GRC software provides a structured framework for managing compliance obligations, risk registers, control libraries, policy management, and audit evidence collection. It maps internal controls to regulatory frameworks like SOC 2, ISO 27001, HIPAA, and PCI, tracks remediation workflows, and produces audit-ready documentation.
When does building GRC make sense?: Building is viable for organizations with a single compliance framework and the ops depth to run a self-hosted platform. CISO Assistant and Eramba are production-ready open-source alternatives covering risk registers and compliance tracking for teams willing to manage their own infrastructure.
When does buying GRC make sense?: Buying earns its keep when you need to cover multiple frameworks simultaneously. Vendors like Vanta and Drata carry pre-built framework content across SOC 2, ISO 27001, HIPAA, and PCI with automated evidence collection that cuts audit prep significantly — the more frameworks, the more the content library justifies the license.
What are the main GRC vendors?: Representative vendors include ServiceNow GRC, Vanta, Drata. B4 Pro scores the full set.
How is AI changing GRC?: AI is automating evidence collection and control validation — tasks that previously required significant manual work. This is making GRC more accessible at the mid-market level, reducing the implementation cost of commercial platforms and improving the viability of open-source alternatives.

The B4 Index scores every software category on two axes, strategic differentiation and AI feasibility, to classify it Build, Buy, Bridge, or Beware. See the full methodology.

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