Continuous delivery is a software engineering practice where production-ready features are produced and deployed to production.
The primary objective of continuous delivery is to perform successful application deployments irrespective of the platform, which could be a large-scale distributed system or a complex production environment.
In multinational companies, we always ensure that the application code is in a stable as well as deployable state even if there are many developers working on the different application components at the same time. In continuous delivery, we also ensure that unit testing and integration testing are successfully performed, making it production ready.