apple used the ibm cloud, which then went to the vz cloud, which is on the aws cloud.
softbank partnered with 8 for local server ip for data sovereignty. and a small software not disclosed.
softbank was/is working with vz, voda, china mobile to get 4-5g ip for them and their various channels/partners.
looking at the lineup, aws needs to use a chat app which allows multiple apps to be designated with programmable api. wags.