The endpoints supported within the Dashboard API are, in my experience, also fairly quickly updated within Help > API docs, in Dashboard itself. In terms of SD-WAN ease-of-management, believe it's also a fairly recent addition to be able to handle SD-WAN configurations using Templates: https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MX_Security_and_SD-WAN/MX_Templates_Best_Practices#Template_SD-WAN_Policies
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