Improve services performance

**Description**
Currently models lacks proper serialization support.

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

**Priority**: Low/Medium

The issue does not identify files, tests, or an entry point; begin by locating the services and models involved in serialization. Clarify the configurable behavior and sensible defaults, then define tests that verify serialization and the intended performance improvement.

Written by the indexing model from the issue text.