Given this is a multinational, it is reasonable for you to come out with an overall roll out strategy. In any complex project, you should expect implementation

Given this is a multinational, it is reasonable for you to come out with an overall roll out strategy. In any complex project, you should expect implementation costs to be a certain percent of development costs. Develop a project rollout template, detailing timelines and resiurces. Then train up people who can assist you with this. Remember, you dont scale but algorithms do. On top of it, unless you are planning to stay awake 24 hours, you will need a support team to span those time zones. If there's existing IT teams they need to be trained.