# BDO
> BDO is a leading global network of public accounting, tax, and advisory firms that perform professional services under the name BDO. It is the fifth-largest accounting network in the world, primarily serving the middle market while also providing services to large multinational entities.
- URL: https://optimly.ai/brand/bdo
- Slug: bdo
- BAI Score: 92/100
- Archetype: Challenger
- Category: Professional Services