Containers are a type of software architecture that allows applications to be packaged into isolated units, or containers, that can be run on any platform. Containers provide an efficient way to deploy and manage applications in the cloud, as they allow for easy portability and scalability. By isolating applications from their underlying infrastructure, containers ensure that applications can run anywhere, regardless of differences in operating systems or hardware. Additionally, containers provide an additional layer of security, as each container is an isolated unit.