Photo will be taken at ASC. What does it mean?

USA H1B Visa
#1

On DS-160 confirmation page, the message appears that Photo will be taken at ASC.
What does it mean?

#2

There is no option to upload photos on DS-160 form online now. It used to be couple of years ago.

Now, the photos are taken by ASC (Application Service Center) or OFC (Offsite Facilitation Center).

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