https://documentation.meraki.com/General_Administration/Licensing/Meraki_Licensing_FAQs
Can I combine co-termination and per-device licensing models in the same organization?
No. Licensing is handled on a per-organization level and each organization can only have one licensing model. Organizations will use the co-termination model by default, but administrators can opt into the per-device model if they choose.
PDL has been retired and this information makes no mention of subscription based licensing.
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