High-Level Cloud CRM Architecture Diagram

I have a project at the school which require me to design a architecture diagram of a CRM application migrating into a cloud environment. The diagram must include: trust boundaries, data flows, external entities, processes, and data stores. The diagram will be used for threat modeling so if you have experience will be an advantage as you will understand the task easier. Since is only for an exercise it should be only high level, without too many technical details. More details about the scenario will be provided. Only experimented freelancers.
Budget: 50$ . Please don't bid more as you will be ignored. It's a high level diagram that should be made in 1-2 hours if you have the right experience