@Oliver Angelil​ There is no concept call internal table, we have 2 types 1. managed 2. external , if you provide any external mount location in legacy it used to be external table . now onwards when you use unity catalog table type will be external , but place to store external table is called external location . In azure that should be ADFS 2 and type of config that you perform will be different to legacy .

legacy:

1. you should mount by using access key
2. you can see that under /dbfs

unity catalog:

1. mounts are not recommended
2. within Data Screen --> you can add external location and credential related to that
3. who ever have access to that they can access data present in that external location