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.
Continuous integration aims to improve the quality of software, and to reduce the time taken to deliver it, by replacing the traditional practice of applying quality control after completing all development.
We use TFS or vss now for development our software.This paractice you can say Continuous Integration