Summary

By now, you should appreciate the key challenges of securing APIs on microservices. The biggest challenge is the increased complexity of the systems compared to a comparable monolithic application implementation. Due to the increased demands to innovate and deliver functionality, it is safe to say that microservices are here to stay, and security will need to embrace this changing landscape. The recommended approach is to build upon a solid and secure foundation, starting with securing the containers that are used and then the Kubernetes clusters that provide the runtime environments. We learned how to secure the critical connectivity between clients and the gateway using TLS and between the microservices themselves using mTLS. The service mesh promises to secure communications seamlessly while providing integration tracing and monitoring.

Finally, we learned about the foundations of zero trust, which is a key philosophy for ensuring strong access control in a complex, distributed...