API Gateway can be configured on startup through a set of external configuration files. These files are used to manage and provision configurations from a centralized location. The externalized configuration can be specified either within a single file providing all the necessary configurations or multiple files for individual configurations. By using multiple files the configurations can be split. For example, the cluster configuration can be specified separately from the Kibana or Terracotta configuration. The externalized configuration can be in YAML or properties files format.

To consider the externalized configuration files during the API Gateway startup, the configuration files need to be referenced in the master configuration file, config-sources.yml.

Both the master configuration and external configuration files are located in the SAGInstallDir\IntegrationServer\instances\instance_name\packages\WmAPIGateway\resources\configuration folder.