TL;DR

• Digital certificates underpin almost every IT service and application
• Machine identities now significantly outnumber human identities in many organisations
• Certificate validity periods are shrinking dramatically across the industry
• Some organisations could face an eightfold increase in certificate management workload by 2029
• Certificate automation is rapidly becoming a mandatory capability rather than a best practice
• Trust Lifecycle Management is becoming a critical part of cyber security strategy

Digital Certificates Are Everywhere

Most organisations rarely think about digital certificates until something breaks. Yet certificates sit behind almost every modern service, including Websites and applications, APIs and integrations, VPNs and remote access, WiFi authentication, Cloud services, Containers and Kubernetes environments, IoT devices and Internal systems and applications. They form the foundation of digital trust.

When certificates are working correctly, nobody notices them, but when they expire unexpectedly, entire services can stop functioning.

Historically, certificate management was often viewed as a niche operational task. Today, it is becoming a strategic issue that affects cyber security, operational resilience, compliance, and business continuity. The reason is not simply because organisations are deploying more certificates, but because the industry itself is changing how certificates are managed and how long they remain valid.

The Hidden Risk Of Manual Certificate Management

Historically, certificate management has often been a manual process.  IT teams have typically tracked certificates using spreadsheets / calendar reminders / ticketing systems or ad-hoc documentation. This approach may work when managing a handful of certificates, but it becomes fragile when organisations are managing hundreds, thousands, or even tens of thousands across distributed environments.

As cloud adoption, automation, APIs, and machine identities continue to grow, manual certificate management becomes increasingly difficult to maintain. The result is often:

• Unexpected certificate expirations
• Service outages
• Compliance failures
• Increased operational overhead
• Avoidable security vulnerabilities

The challenge is no longer simply managing more certificates. It is managing them more frequently.

Certificate Lifespans Are Shrinking Rapidly

One of the biggest drivers behind certificate automation is not always well understood outside specialist security teams. The industry is actively reducing certificate validity periods. For many years, certificates were issued with lifespans measured in years. More recently, the industry standard moved to 200-day certificates. That is already changing. The industry is now on a defined path towards:

• 100-day certificates by 2027
• 47-day certificates by 2029

The objective is clear, shorter certificate lifespans improve:

• Security
• Cryptographic agility
• Compromise containment
• Responsiveness to emerging threats

From a security perspective, shorter-lived certificates reduce the window of opportunity available to attackers and allow organisations to respond more quickly to evolving cryptographic standards. However, they also create a significant operational challenge. What was previously a periodic administrative task is rapidly becoming a continuous operational process. Without automation, organisations face a substantial increase in workload.

Industry estimates suggest some teams could see certificate management activity increase by as much as eight times by 2029. That changes the conversation completely. Certificate automation is no longer simply about efficiency. It is increasingly about maintaining operational viability.

The Rise Of Machine Identities

One of the biggest shifts in cyber security is the rapid growth of machine identities, most organisations focus heavily on:

• User identities
• Privileged accounts
• Access management

However, machine identities now significantly outnumber human identities in many environments eg servers, containers, applications, APIs, cloud workloads, IoT devices, automation platforms. Each of these may require certificates to establish trust and secure communications.  The challenge is that machine identities often scale much faster than traditional identity management processes were designed to support.  At the same time as certificate lifespans are shrinking, organisations are managing more certificates than ever before. As organisations continue to automate, this growth will only accelerate.

Why Trust Lifecycle Management Matters

Certificate management is no longer simply about preventing expiry.  Trust Lifecycle Management covers the full certificate journey from:

Discovery >> Issuance >> Deployment >> Monitoring >> Renewal >> Revocation >> Retirement.

Without visibility into these stages, organisations often struggle to answer basic questions:

• Which certificates do we have?
• Where are they deployed?
• Who owns them?
• When do they expire?
• Which services depend on them?

These gaps create operational and security risk because certificates are not isolated technical artefacts. They sit directly inside service availability, authentication, encryption, trust, and resilience.

Why Automation Is Becoming Essential

The reality is that certificate volumes continue to increase while certificate lifespans continue to decrease.

At the same time:

• Certificate lifespans are reducing
• Environments are becoming more dynamic
• Cloud adoption continues to grow
• Machine-to-machine communication is increasing
• DevOps and platform teams are issuing certificates at greater speed

The combination of these trends is creating unprecedented operational pressure.  A certificate estate that may have been manageable manually a few years ago could require several times more intervention by the end of the decade.  Manual administration simply does not scale effectively.

Certificate automation helps organisations:

• Reduce outage risk
• Improve visibility
• Simplify compliance
• Accelerate deployment
• Reduce administrative overhead
• Strengthen security controls

Most importantly, automation helps remove the human error that often sits behind certificate-related incidents. This is where the market is clearly moving, because certificate management is no longer just an IT housekeeping task. It is becoming part of cyber resilience.

What We Are Seeing In Practice

Across both the UK and New Zealand, many organisations have invested heavily in Identity and Access Management, Zero Trust initiatives, cloud security, and Privileged Access Management. However, machine identity management is often still overlooked.

In the UK, we often see larger estates with long-standing certificate dependencies across legacy platforms, internal applications, cloud services, and supplier-hosted systems. The risk is not usually a lack of awareness, but a lack of complete visibility and ownership.

In New Zealand, we often see leaner IT teams operating cloud-first or SaaS-heavy environments where machine identities, API integrations, and certificates can grow quickly without the same level of dedicated operational resource. The result is a similar risk profile, but with different pressures around scale, visibility, and day-to-day ownership.

Certificate sprawl is becoming increasingly common, particularly in organisations with:

• Multi-cloud environments
• DevOps teams
• API-driven architectures
• Containerised applications
• Large internal infrastructures
• Hybrid workforces

Many security leaders are now recognising that machine identities require the same governance and visibility as human identities. If an organisation would not accept unknown privileged users, it should also question unknown or unmanaged certificates.

Where AI Changes The Conversation

AI adds another layer to the certificate and trust discussion because AI-enabled services rely heavily on APIs, automation, machine-to-machine communication, and distributed infrastructure.

As AI applications become more integrated into business processes, the number of systems that need to authenticate securely will continue to grow. This increases the importance of understanding certificate ownership, expiry, trust chains, and service dependencies.

AI may also help security teams analyse certificate estates more effectively by identifying anomalies, mapping relationships, and highlighting potential risks. However, automation and AI are only useful if the underlying processes are governed properly.

The Bigger Picture

Cyber security discussions often focus on people, devices, and applications. Increasingly, trust itself is becoming an asset that needs managing. As environments become more automated, distributed, and interconnected, organisations need confidence that systems can authenticate and trust one another securely.

Certificate automation and Trust Lifecycle Management are becoming fundamental building blocks for:

• Zero Trust architectures
• Cloud security
• API security
• Machine identity management
• Operational resilience
• Compliance and assurance

The move towards 47-day certificates by 2029 is likely to become a defining moment for many organisations. Much like the shift towards MFA or Zero Trust, certificate automation is moving from being something mature organisations choose to do, to something all organisations will need to do simply to keep pace with operational reality. This is not simply an operational IT challenge. It is becoming a cyber security and business resilience requirement.

If your organisation has not reviewed how certificates, machine identities, and trust lifecycles are being managed, now is the time. The move towards 47-day certificates is already underway, and organisations that automate early will be far better positioned than those relying on manual processes.

👉 Contact us to help you assess your certificate estate, machine identities, and trust lifecycle strategy…

📞 UK +44 (0) 113 341 0123

📞 NZ +64 (0)9 802 2444

📧 hello@itogether.com

FAQs

• • What is certificate automation?
  Certificate automation uses technology to automatically discover, issue, deploy, renew, and manage digital certificates without manual intervention.
  
  • What is Trust Lifecycle Management?
  Trust Lifecycle Management is the process of managing digital certificates and machine identities throughout their lifecycle, from issuance to retirement.
  
  • Why are machine identities important?
  Machine identities allow systems, applications, APIs, cloud workloads, and devices to authenticate securely. They now outnumber human identities in many organisations.
  
  • What are the risks of manual certificate management?
  Manual processes increase the likelihood of certificate expiry, service outages, compliance issues, operational inefficiencies, and avoidable security gaps.
  
  • How does certificate automation support Zero Trust?
  Certificate automation helps ensure trusted authentication between systems, supporting the continuous verification principles that underpin Zero Trust architectures.
  
  • Why are certificate lifespans being reduced?
  Certificate validity periods are being shortened to improve security, support cryptographic agility, and reduce the impact of compromised certificates. The industry is moving towards 100-day certificates by 2027 and 47-day certificates by 2029.
  
  • Why does this matter for UK and New Zealand organisations?
  Both markets are seeing growth in cloud, APIs, automation, and machine identities. The operating models may differ, but the need for visibility, ownership, and automated trust management is the same.