Add configuration options for serialization

**Description**
Currently services lacks proper import support.

**Proposed solution**
Add configurable import with sensible defaults.

**Priority**: Low/Medium

The issue names no files, serialization format, entry point, or tests. Start by locating the service serialization and configuration paths, then determine the intended import behavior and sensible defaults; the work is done when import behavior is configurable and covered by appropriate tests.

Written by the indexing model from the issue text.