Brownfield
Work performed within or around an existing system and its constraints.
Plain English
Changing something that already has users history and dependencies.
In context
Brownfield projects must account for legacy behavior data migration integrations and operational continuity.
Example
“This is a brownfield migration with several old clients to support.”
When you'll hear this
- migration
- planning
- architecture review
Common misunderstanding
Brownfield does not automatically mean poorly designed or obsolete.
Commonly used by
Related terms
Updated: 2026-08-25
