Network Interface

Network Interface of an elastic compute instance (vNIC) is a software-defined network interface that enables elastic compute instance to communicate over a virtualized network. Each vNIC is associated with an elastic machine instance and behaves like a physical NIC, allowing the instance to send and receive network packets.

Primary Network Interface

When you create an elastic compute instance, a primary network interface will be created at the same time. This primary vNIC cannot be detached.

Elastic Network Interface

If you have more needs on complex networking, you can attach additional elastic network interface to your instance. The elastic vNIC can be detached and then re-attached to other elastic compute instance.