Continuous Integraion è una pratica di ingegneria del software che prevede di integrare le modifiche software almeno una volta al giorno.
Ecco un estratto dal famoso blog post di Martin Fowler su Continuous Integration
Continuous Integration is a software development practice where members of a team integrate their work frequently, usually each person integrates at least daily - leading to multiple integrations per day. Each integration is verified by an automated build (including test) to detect integration errors as quickly as possible. Many teams find that this approach leads to significantly reduced integration problems and allows a team to develop cohesive software more rapidly.