A cloud broker receives a container from a client device. The container includes a software application and metadata. The cloud broker instructs a first cloud hosting facility to execute the container at a performance level specified by the metadata. The cloud broker determines first metrics when the first cloud hosting facility is executing the container. The cloud broker instructs a second cloud hosting facility to execute the container at the performance level specified by the metadata. The cloud broker determines second metrics when the second cloud hosting facility is executing the container. The cloud broker automatically selects a particular cloud hosting facility to host the container based at least partly on the first metrics and the second metrics.