PKI cost and certificate sprawl: what IAM teams need to know

TL;DR: PKI operating costs are often far higher than organisations expect, with a Forrester model showing $12.7 million in three-year benefits and a 356% ROI from modernisation against $2.8 million in costs, according to Keyfactor. The practical lesson is that certificate lifecycle automation, not manual administration, is now the decisive control for scale and cost.

NHIMG editorial — based on content published by Keyfactor: The Real Cost of PKI: What Certificate Management Costs

By the numbers:

• The same study found total benefits of $12.7 million in present value against total costs of $2.8 million over three years.
• Provisioning a single certificate takes an average of 90 minutes in manual workflows, compared with 2 minutes when automated.

Questions worth separating out

Q: How should security teams reduce PKI operating cost without weakening trust controls?

A: Start by removing manual work from the certificate lifecycle.

Q: Why do short TLS lifespans increase operational risk for certificate teams?

A: Shorter lifespans compress the time available to discover, approve, renew, and deploy certificates before they expire.

Q: What breaks when certificate ownership and visibility are unclear?

A: Renewal work becomes fragmented, duplicated, or missed because no one can prove which certificate belongs to which service or business unit.

Practitioner guidance

• Inventory certificate ownership and expiry state Build a complete inventory of CA servers, HSMs, public certificates, private certificates, and renewal owners so you can see where lifecycle work is actually happening.
• Automate the highest-volume renewal paths Prioritise automation for certificates with the most frequent renewals and the highest operational touch cost, especially where manual renewal exceeds the acceptable service window.
• Reassess certificate type by trust boundary Review where public certificates are being used for internal traffic, service-to-service trust, or other closed use cases that could be served by private issuance.

What's in the full article

Keyfactor's full blog post covers the operational detail this post intentionally leaves for the source:

• The full cost model behind the $921,000 infrastructure baseline, including CA servers, HSMs, licensing, and staffing assumptions.
• The Forrester composite organisation inputs, including the 40,000 employee and 400,000 certificate assumptions used in the ROI calculation.
• The breakdown of savings across renewal automation, deployment automation, incident reduction, and infrastructure consolidation.
• The business-case framing and customer quotes that support the ROI narrative for leadership audiences.

👉 Read Keyfactor's analysis of PKI costs and certificate management ROI →

PKI cost and certificate sprawl: what IAM teams need to know?

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