Release Notes
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Migrate Custom Applications to the new host naming scheme
Recently we introduced a new host naming scheme for the commercetools APIs, including the Merchant Center, to increase region and cloud provider transparency.
While the previous hostnames such as *.sphere.io (Google Cloud, Belgium), *.commercetools.com (Google Cloud, Belgium), and *.commercetools.co (Google Cloud, Iowa) continue to be operational, we strongly recommend to migrate to the new hostname structure.
In regards to Custom Applications, the runtime configuration needs to be updated to support both the new and the legacy hostnames to allow users to log in with the new Merchant Center hostname, and to be backwards compatible with the legacy hostnames.
Here are the steps to take.