TLS Foundations: Securing Distributed Systems and Microservices

In modern distributed systems, securing data in transit is not optional. This course helps you understand how Transport Layer Security (TLS) establishes trust, confidentiality, and data integrity across network boundaries. You will transition from guessing how network security works to confidently explaining and planning secure communications. You will understand the cryptography powering modern protocols, how handshakes establish secure tunnels, and how to protect distributed applications from interception and tampering. What you'll learn: - Understand the fundamental concepts of symmetric and asymmetric cryptography that underpin TLS. - Analyze the step-by-step TLS handshake process, focusing on the performance and security improvements in TLS 1.3. - Configure Mutual TLS (mTLS) to enforce strong, two-way authentication between microservices. - Manage digital certificates, public key infrastructure (PKI), and automated certificate renewal patterns. - Identify and mitigate common transport-layer vulnerabilities and outdated cipher suites. The course begins with essential security terminology, cryptographic definitions, and core networking concepts. From there, you will explore handshake mechanics, certificate verification, and real-world architectural patterns for securing APIs and distributed services. This course is designed for software developers, system administrators, and technology enthusiasts who are new to transport-layer security. No prior background in cryptography is required. Start reading today to build a secure foundation for your distributed services.