It's certainly very useful, as explained in the part of the article about 'scaling down', i.e. development-mode and small to medium scale deployments. Addition

It's certainly very useful, as explained in the part of the article about 'scaling down', i.e. development-mode and small to medium scale deployments. Additionally, if you find your application needs to scale up, there are well-known ways of doing that with Django, without using Twisted.