What Is a Replication Service?
A replication service is one that Integration Server automatically executes when it prepares to replicate a package. A replication service executes when the Integration Server Administrator creates a package release (full release or patch) or creates a package archive.
Replication services provide a way for a package to persist state or configuration information so that these are available when the published package is activated on the remote server.
Note:
The term replication service does not refer to the services contained in pub.replicator or to services that subscribe to replication events (replication event services).