Today, when Dynamics 365 Business Central is available in many countries around the globe, it is important to know how our service figures out which localization a specific customer is going to get when they sign up for the service.

You already know that in order to sign up for Business Central, you need to have an organization ID, also known as your work or school email address. The organization ID is linked to your company’s Azure Active Directory (Azure AD) tenant.

Azure Active Directory, among other things, offers identity and access capabilities for applications and services, or in other words, helps you keep track of your company users, subscriptions, licenses, domains, and other attributes.

If you are an administrator in your Azure Active Directory tenant, you can manage your directory in any of these portals:

The Business Central service uses the country of your Azure AD tenant to figure out which localization version of Business Central to provision for you.

Here's how to find out which country that is: Navigate to the Microsoft 365 admin center, and then go to Settings > Organization profile section:

The country you see in the Country or region field determines the localization version of the Business Central we provision for you. At this point there is no possibility to pick a different localization for your Dynamics 365 Business Central environment. It is also not possible to change the country of the Azure AD tenant. It is however possible to create new Azure AD tenant(s) that specify the exact country you need, and you can then use that tenant to sign up for Business Central. Please see my previous blog post for more details.