Episode 23 — Container Networking Basics: why workloads change network assumptions
Containerized workloads change network assumptions because services become more dynamic, more distributed, and often more dependent on naming and policy than on fixed endpoints. This episode introduces container networking at a conceptual level, explaining why multiple workloads can share a host while still needing isolation, why virtual interfaces and logical networks become the norm, and why service identity becomes more important than a specific IP address. The first paragraph focuses on how containers affect connectivity patterns, such as increased east/west traffic between microservices, frequent endpoint changes during scaling, and reliance on service discovery for consistent reachability. It also explains why traditional perimeter thinking is insufficient in heavily containerized environments, because internal service-to-service trust becomes a dominant risk factor.
