What is the purpose of the Multi-Site Manager?
MSM (Multi-Site Manager) makes it simple to administer many websites that share content. MSM allows you to build site relationships so that content updates on one site are automatically reproduced on others.
For foreign audiences, websites, for example, are frequently supplied in different languages. A manual approach for synchronising content across sites is viable when the number of sites in the same language is small (three to five). However, as the number of sites expands or when many languages are involved, automating the process becomes more efficient.