Just got this from Authorize.net. Is this something we will need to address in Shopsite?
Network Change Notification
Dear Authorize.Net Merchant:
Authorize.Net will be making changes to the internet connection that serves our data centers and moving away from Akamai SureRoute as a content delivery network (CDN) for our services.
We will be moving our API endpoints currently on Akamai to our internet connection directly through a Public Commercial Network (PCN) matching our non-Akamai API endpoints.
For our portals (Merchant Interface, Virtual Point of Sale, Partner Interface) currently on Akamai we will be moving them to another CDN, CloudFlare.
These changes will happen in phases over the next few months and into 2020. The first change will happen in our Sandbox environment.
For more details and information on this change and any needed actions please refer to our Authorize.Net Network Change FAQ.
Thank you for your attention to this matter and for being an Authorize.Net merchant.
Sincerely,
Authorize.Net