Certificate Lifecycle Management (CLM)

What We Specialize In
Certificate lifecycle management starts with knowing what you have. RDX engineers run discovery across your networks, cloud accounts, load balancers, and application stacks to build a certificate inventory that includes the certificates nobody remembers issuing. From there we stand up expiration monitoring with alert thresholds that give your team time to act, not a warning the morning something breaks. We design automated renewal workflows using the tooling that fits your environment, whether that is a commercial CLM platform, your existing PKI, or ACME-based issuance, and we put a human approval gate in front of any change that touches production. We also cover the supporting work that makes a CLM program stick: key storage and rotation practices, ownership records for every certificate, runbooks for exception handling, and reporting that shows current posture at a glance. Our approach aligns to NIST SP 1800-16, the NIST practice guide for TLS server certificate management, so your program maps to guidance auditors already recognize.

Why Certificate Lifecycle Management Matters
An expired certificate is one of the few failures that takes down a healthy system. The application works, the infrastructure works, and traffic still stops because a date passed. Certificate expiration outages are common, they are embarrassing, and they are almost entirely preventable. The problem is getting harder, not easier. Certificate counts keep growing as environments add services, containers, and machine identities, and maximum lifetimes for public TLS certificates keep getting shorter, which means more renewals per year for every certificate you own. Spreadsheets and calendar reminders do not scale to that volume. A managed certificate lifecycle also strengthens the rest of your security program. Accurate inventory supports zero trust initiatives that depend on trusted machine identity. Documented issuance and renewal supports control families in NIST 800-53 and NIST 800-171. And when an incident does involve a certificate, a clean inventory turns hours of guesswork into a quick lookup.

Certificate Operations, Wired Into SOAR and ITSM
Most CLM tooling stops at the renewal. RDX connects certificate operations to the systems your security and IT teams already live in. Our engineers work in Cortex XSOAR, Splunk SOAR, Tines, and ServiceNow, and we use that experience to wire certificate events into real workflows. An expiring certificate opens a ticket with an owner and a due date instead of sending an email nobody reads. A renewal request routes to the right approver, and the approval itself is captured. A failed renewal escalates automatically. Certificate alerts can also feed your SIEM, including Splunk and Microsoft Sentinel, so certificate posture shows up where your analysts already look. Every step produces evidence: who approved the change, when it ran, what it touched, and what the result was. That record is the difference between telling an auditor your certificates are managed and showing them. Human-led. Agent-assisted. Evidence-proven. That principle runs through every workflow we build.

Use Case
Picture a regional company running about three thousand certificates across two data centers, a cloud footprint, and a handful of SaaS integrations. Renewals live in a spreadsheet owned by one engineer, and last year an expired certificate on an API gateway took a customer-facing service down for six hours. An engagement with RDX would start with discovery, which in an environment like this could surface certificates missing from the spreadsheet, sometimes hundreds of them, including self-signed certificates on internal services. RDX would stand up inventory and expiration monitoring, then build renewal workflows: automatic renewal for low-risk internal certificates, and a ServiceNow approval step for anything in the production path. Certificate alerts would flow into the company's SOAR platform so expirations get tracked like any other security event. The goal for the first quarter would be a current inventory, no surprise expirations in flight, and an evidence trail ready for the next audit.

Frequently Asked Questions

Do we need to buy a commercial CLM platform before working with RDX?
No. We start with what you already run. Many environments can get strong coverage from native PKI tooling and ACME-based automation before spending anything on new software. If your certificate volume or compliance needs justify a commercial CLM platform, we help you define requirements, evaluate options, and deploy the one you choose. We are tooling neutral, we do not resell certificate platforms, and our recommendations are based on your environment, not a vendor relationship.

Will automation renew or replace production certificates without a human involved?
Not the way we build it. Automation handles the work machines do well: discovery, monitoring, staging renewals, and validating results. Any change that touches a production system passes through a human approval gate, usually inside your ITSM or SOAR platform, so a named person reviews and approves before it runs. That approval is recorded along with the change itself. This follows our operating principle: Human-led. Agent-assisted. Evidence-proven. You get the speed of certificate automation without giving up change control.

How does certificate lifecycle management help with audits and compliance?
A managed program produces the evidence auditors ask for: a current certificate inventory, documented ownership, recorded approvals, and logs showing renewals happened on time. We align our work to NIST SP 1800-16, the NIST practice guide for TLS server certificate management, and the resulting records support control families in NIST 800-53 and NIST 800-171. To be clear, these are frameworks we align to and build toward, not certifications RDX holds, and we do not guarantee compliance outcomes. What you get is documentation that makes your assessor's job easier.

Secure. Automate. Govern.
Ready to get ahead of your next certificate expiration? Email RDXenterprise@rdxenterprise.com or call 919-219-8508 and we will talk through your environment. Secure. Automate. Govern.