Single Network Slice Selection Assistance Information (S-NSSAI)
S-NSSAI is the identifier 5G networks use to name a particular network slice.
What is Single Network Slice Selection Assistance Information (S-NSSAI)?
An S-NSSAI combines a Slice/Service Type, which shows the expected behaviour (such as eMBB or URLLC), with an optional Slice Differentiator that tells apart slices of the same type. Devices and network functions use it to pick the right slice.