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Cato used to be a leader in SD-WAN, but now it says it's not an SD-WAN company anymore. Instead, it's delivering a new kind of service -- Secure Access Service Edge (SASE) -- a category comprising SD-WAN and also security, delivered over the cloud. Dave Greenfield, secure network evangelist for Cato Networks, joins Light Reading editor Mitch Wagner to discuss what the transition means, why SD-WAN alone is no longer a fit for the industry, and whether gelato is better than Ben & Jerry's.