Optimize services for large datasets

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

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

**Priority**: Low/Medium

The issue names no files, tests, or entry points. Start by locating the types and service code involved in handling large datasets, then identify the existing serialization path and its current limitations. Done means configurable serialization is available with sensible defaults and the relevant behavior is covered by tests.

Written by the indexing model from the issue text.