The documentation you are viewing is for Dapr v1.0 which is an older version of Dapr. For up-to-date documentation, see the latest version.
Dapr configurations are settings that enable you to change the behavior of individual Dapr application sidecars or globally on the system services in the Dapr control plane. An example of a per Dapr application sidecar setting is configuring trace settings. An example of a Dapr control plane setting is mutual TLS which is a global setting on the Sentry system service.
Read this page for a list of all configuration options.