Continuous Integration (CI) is a practice used by software engineers to automate certain elements of the development process. Namely, engineers share their code to a central location throughout the day. From there, the code is automatically scanned for potential errors or hiccups.
Committing to this continuous process should ensure that development continues to run smoothly, with any potential errors identified and ironed out before they can have an impact.
In the fast-paced world of agile, this is vital.