The advantages of using containers in software deployment include enhanced portability, scalability, and efficiency. Containers encapsulate an application and all its dependencies, ensuring that it runs consistently across different environments, from development to production. This portability reduces the risk of environmental discrepancies that can lead to deployment failures. Furthermore, containers allow for rapid scaling and resource optimization, enabling efficient use of infrastructure. By implementing containers, organizations can streamline their development processes, reduce deployment times, and facilitate continuous integration and delivery practices.