A customer has the following requirements for a new Campaign implementation:
* 20 Marketing employees will access the Campaign instance from three different countries.
* Marketing employees will use MacOs and Windows 10 professional.
* 800,000 of the customers in the CRM system are emailed approximately twice a week.
* The customer uses a small mobile app for Push messaging that has 20,000 device registrations, which the customer hops to grow.
Which two factors have the most impact on the infrastructure solution? (Choose two.)