new to Azure had some questions regarding Cognitive services.
Thanks
It is a cloud based solution. Improvents or updates are done by Microsoft. The only thing that might need updating are SDKs (see the docs) you might be using or REST api calls if they have changed or have been updated.
But unless there are breaking changes in the REST api you don't need to worry about having to update things. You might need to update the code if newer possibilities are presented and you want to use them.
One of the reason of using a managed cloud service like Azure Cognitive Services is that you don't need to worry about infrastructure and updates.