With CRM 2015, Microsoft Dynamics CRM introduced a key feature for companies that span multiple geographies and want their CRM instance to be as close to their operational region as possible. There are 2 main reasons which drove the need for this feature:

1. Latency: If you are an organisation having offices in APAC, EMEA and North America, it is not necessary that each of your CRM organisation should be situated in North America data centre for CRM. This will cause latency to APAC and EMEA offices. So, it will be better to have your CRM instance for APAC office in APAC data centre and EMEA one in the EMEA centre as well.

2. Data Compliance Rules and regulations: Consider you are a banking or financial institution, it always will mean that if your customer data resides locally in your region’s data center, it acts as more compliant with rules and regulations of your region.

Considering this, Microsoft Dynamics CRM 2015 Online gives us the ability to pick data centres as per our needs divided into 4 Data centres as of now:

· North America

· EMEA

· APAC

· SAM

Below graphic referred from Microsoft official video channel, gives a view of the data centres on World map:

So, does it mean it takes care of Data replication between each organisation? – No, each instance is separate instance but can be managed from single office 365 administrative console.

Also, if somebody accesses CRM from local area it is going to hit the local data centre:

Above graphic explains the scenario in more detail.

For further study, refer to official Microsoft Dynamics channel video here: https://www.youtube.com/watch?v=VBKmZ0-HbOY&feature=youtu.be

Hope it helps!