Environment Overview

An environment is a collection of basic compute (such as CCE and ECS), network (such as ELB and EIP), and middleware (such as DCS and RDS) resources, used for component deployment and running. ServiceStage combines multiple basic resources into an environment, including development, test, pre-production, and production environments. Managing resources and deploying components by environment simplifies O&M management.

For details about components, see Component Overview.

Table 1 lists the environments supported by ServiceStage.

**Table 1** ServiceStage environment types
Environment Type	Description
VM	Applicable to VM-based deployment. Components are deployed on VMs using software packages.
Kubernetes	Applicable to container-based deployment (CCE). Components are deployed using container images and scheduled by Kubernetes.
VM + Kubernetes	CCE clusters and VMs are managed in an earlier version. After the upgrade to the current version, the environment type is VM + Kubernetes.