Of course, you can build the site so different languages have different workflow, so French pages can be approved by someone in France. Extremely rapid development . A good Domino designer can have something like that up and running in days rather than months. There are other systems that can produce a site as quickly, but often you're stuck to one of a selection of basic page layouts. Decentralized and scalable .
Clustering allows automatic failover.
Extremely rapid and painless evolution . You can change the design and content of a Domino web site while it's up and running. Changes to the site are automatically distributed to all your servers with no work on your part. Design, logic and content are separated . You can also change the design without having to recompile all your code, so designers don't generally need to know about programming.