We have moved!

You are currently looking at documentation for Umbraco 8 and older versions.
An automated guess is that docs.umbraco.com/umbraco-cms/reference/management/services/sectionservice/ could be the link to the new documentation for Umbraco 9 and newer versions.

    SectionService

    The Umbraco backoffice consists of Sections, also referred to as Applications.

    In previous versions the SectionService was used to control/query the storage for section registrations in the ~/Config/applications.config file. This config file no longer exists in the current version and therefore the SectionService has become unnecessary.