Global Deployment Paradigm
Global Atlas deployments are the most complex deployment paradigms, and therefore require very careful planning. In almost all cases, a a Multi-Region Deployment Paradigm (or its subset, a Multi-Cloud Deployment Paradigm) will fulfill your needs.
The following are a few reasons why you might consider a global deployment strategy:
You need a single global connection string
You need to perform global aggregations across all customers
You need the ability to read/write for all customers from everywhere in one logical cluster, while also having regional reads/writes
Recommendations for Global Deployments
The complexity of global deployments results in many opinions on best practices. This makes them difficult to adopt as a general solution.
The Atlas Architecture Center does not currently cover recommendations specific to global deployments. Contact MongoDB's Professional Services team to discuss your specific requirements and designing a Atlas global deployment strategy.