Deployment - App Server: tomcat/shared/classes/alfresco/web-extension/share-config-custom.xml (Untouched by re-deployments and upgrades).
Deployment All-in-One SDK project: aio/share-jar/src/main/resources/META-INF/share-config-custom.xml - Share configuration related to a specific Share module extension, such as Document Library Action configuration, form configuration, aspect and type configuration.