Public Key Infrastructure

Public Key Infrastructure (PKI) Services

Secure Your Connected Ecosystem — From Factory Floor to Cloud

Overview

Future-Proof Your Digital Infrastructure

As the number of connected devices in industrial and enterprise environments continues to grow, securing communication between components becomes essential. Our PKI services are designed to establish trusted identities and ensure secure, authenticated, and encrypted communication across your IT and OT networks.

Client Challenge:

Building Resilience in a Digital-First World

The rapid rise of IIoT (Industrial Internet of Things) and digitalization in OT environments demands more than just operational efficiency it demands trust. Devices, systems, and users must authenticate securely and communicate without risk of interception or tampering. Meanwhile, rising regulatory pressures require provable compliance and proactive risk mitigation strategies.

AppInvelo’s Perspective: Certificate Automation for Operational Maturity

We help organizations accelerate their digital transformation by integrating robust, compliant PKI systems customized for your business realities.

Automation First

Automated certificate lifecycle management reduces human error, enhances reliability, and improves governance. From issuance to revocation, we automate the full cycle for certificates and secure identities

Scalable Architecture

Whether you’re onboarding 100 or 100,000 devices, our scalable PKI designs grow with your operations without compromising security or performance.

Seamless Integration

From modern cloud-native services to legacy OT assets, we ensure seamless integration into your existing infrastructure.

Key Differentiators

IT & OT Integration

Our team bridges decades of IT security experience with deep domain knowledge of OT environments to deliver PKI solutions that fit even the most complex industrial control systems (ICS).

Support for Brownfield Systems

We specialize in adapting PKI to legacy OT devices with limited cryptographic capabilities, ensuring business continuity without forced upgrades.

Compliance-Ready Frameworks

Our frameworks align with IEC 62443, NIST, and ISO/IEC 27001 standards — supporting your regulatory and audit needs from day one.

Service Components

A multinational healthcare organization partnered with AppInvelo to modernize its 7-year-old OT cybersecurity architecture deployed across 20 global sites.

Design Phase

We begin with a comprehensive assessment of your business and security needs. Appinvelo then defines a tailored PKI hierarchy, validation services, high-availability configurations, and operational processes ensuring all internal and external stakeholders are aligned for long-term success.

Migration & Implementation

Migrating from legacy PKI or introducing PKI in greenfield environments? We handle the transition end-to-end — with minimal disruption. Our phased approach ensures high visibility, coordinated stakeholder involvement, and rigorous testing, all while maintaining uninterrupted business operations.

Managed PKI Services

Focus on your core business while Appinvelo handles your certificate lifecycle. From issuance to renewal, revocation, and audit trails — we provide a complete PKI-as-a-Service offering with 24/7 monitoring and SLA-backed uptime.

Client Case Study: Modernizing PKI for Next-Gen Devices

Challenge:

A leading consumer electronics client planned to launch a new line of connected devices with cloud-based companion services and smartphone integration. Their existing legacy PKI was unable to support the scale and security requirements of this initiative.

Solution:

Appinvelo designed and deployed a secure, scalable PKI hierarchy tailored for manufacturing environments. Factory Certificate Authorities (CAs) were introduced to securely provision device identities during production, ensuring traceability and lifecycle trust from day one.

Simultaneously, we migrated their legacy PKI into the new environment without disrupting existing customers. All device certificates were updated transparently, with no visible impact to the end user.

Outcome:

● Reduced operational PKI cost by optimizing the number of CAs
● Implemented fully automated certificate lifecycle processes
● Enabled future scalability for millions of devices across multiple
● Strengthened compliance posture with auditable processes and cryptographic hygiene

Why Choose Us?

15+ years of cybersecurity and OT experience
Global delivery teams with 24x7 managed support
End-to-End Support from planning to certification
Trusted by critical infrastructure and Fortune 500 clients
Compliance-driven, automation-first approach

Ready to Assess, Improve, and Defend?

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