Hi, Model serving was available generally from March 7th 2023 in Azure Databricks. (https://azure.microsoft.com/en-us/updates/generally-available-serverless-realtime-inference-for-azur...)

Also, there are region availabilities for the endpoints, could you please check if your region is under the listed regions here:

https://learn.microsoft.com/en-us/azure/databricks/machine-learning/model-serving/#--region-availabi...

Please let us know if this helps. 

Also please tag @Debayan​ with your next response which will notify me, Thank you!