SmartHub versus direct connection to WiFi, what is the purpose of a SmartHub for Ultra or Pro 3

[BasicQuestion]

What is the benefit of a SmartHub, or its purpose

if the Arlo Ultra and Pro 3 can probably connect (sync?) directly to Wi-Fi router.

Some Arlo cameras/floodlights do not need a SmartHub but what is its purpose

or advantage?  Thank you.

[DannyBearAgain]

The following article may assist.

https://kb.arlo.com/000062754/What-are-the-benefits-of-using-an-Arlo-SmartHub-or-Base-Station 

[StephenB]

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@BasicQuestion wrote:

if the Arlo Ultra and Pro 3 can probably connect (sync?) directly to Wi-Fi router.

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These two models cannot connect to your home wifi, they require a smarthub.

The Pro 3 floodlight, Pro 4, and Pro 5s can connect to either.