You can run as many Cloud Containers as you like, so long as they fit on the server(s) that you have provisioned. Every server has a finite amount of resources. In theory, one container could all an entire server's resources if it gets a lot of traffic, is a complex application or takes up a lot of space. Equally you might be able to fit 20 containers before you run out of resources - it all depends on your usage.The number of containers we show on our plans is the absolute maximum that we would recommend on each plan, based on the average usage we have seen. For your individual case, the actual maximum might be fewer.