SSL Certificates, HTTPS, TLS & PKI – Online Course

Web Infra Academy

Digital certificates are everywhere in modern IT. They secure websites, APIs, cloud platforms, applications, devices and service-to-service communication. Yet certificate problems remain a common cause of security incidents and service outages.

This practical, vendor-neutral course explains how HTTPS, TLS, PKI and digital certificates work and how they are used and managed in real-world IT environments.

You will explore:

• Encryption fundamentals and symmetric and asymmetric cryptography
• HTTPS, SSL and TLS and how they secure communication
• The TLS handshake and establishment of secure connections
• X.509 digital certificates and Public Key Infrastructure (PKI)
• Certificate authorities, root certificates, intermediate certificates and trust chains
• Certificate validation and revocation using CRL and OCSP
• One-way TLS and mutual TLS (mTLS)
• Certificate formats, keystores and truststores
• Certificate lifecycle management, renewal and rotation
• Common certificate risks, failures and misconfigurations
• Certificate automation in DevOps and Kubernetes environments
• Certificates within Zero Trust architectures
• Certificate management best practices and post-quantum developments

The emphasis is on understanding how these technologies work together rather than memorising individual commands or vendor-specific implementations.

After completing the course, you will be able to understand certificate chains and TLS connections, recognise common certificate problems and make better decisions about certificate security, management and automation.

This course is designed for IT professionals who work with applications, infrastructure, cloud platforms or security and want to understand how HTTPS, TLS and digital certificates work in practice.

It is particularly suitable for:

• DevOps and platform engineers
• System and cloud administrators
• Security engineers
• Cloud engineers
• Solution and application architects
• IT professionals responsible for certificates, TLS or secure communication

No previous specialist knowledge of PKI or digital certificates is required.

A basic understanding of IT and networking concepts is recommended.

No prior knowledge of encryption, TLS, PKI or digital certificates is required. No programming or hands-on coding experience is necessary.

Develop practical security skills relevant to roles such as DevOps Engineer, Platform Engineer, Security Engineer, Cloud Engineer, System Administrator and Solution Architect. The course strengthens your understanding of TLS, PKI, certificate management and secure communication across modern IT environments.