Containers and Virtual Machines (VMs) are both technologies used to package and isolate applications.
Containers
Lightweight
Containers share the host operating system’s kernel, which makes them more lightweight compared to VMs. They contain only the application and its dependencies, not a full OS.
Portability
Containers can run consistently across different environments, from a developer’s laptop to a production server.
Speed
Containers can start up in seconds because they don’t need to boot up an entire OS.
Resource Efficiency
Containers use fewer resources (CPU, memory, and storage) because they share the host OS and don’t require a full OS for each instance12.
Virtual Machines (VMs)
Full Isolation
VMs run a complete operating system, including its own kernel, providing strong isolation from the host and other VMs.
Flexibility
VMs can run different operating systems on the same physical hardware.
Resource Intensive
VMs require more resources because each VM includes a full OS, which means more CPU, memory, and storage usage.
Security
VMs offer a higher level of security isolation, which is beneficial for running applications from different tenants or with different security requirements.
