Always Encrypted can encrypt columns with deterministic encryption or randomized encryption. Your choice on which is better for you depends on how you plan to use the encrypted data. Deterministic encryption will produce the same encrypted value every time whereas randomized will not have the same encrypted value.
If you want to encrypt records but will also want to be querying encrypted records, you’ll want to choose deterministic for more efficient queries. Deterministic encryption will still allow point lookups, equality joins, grouping, and indexing when querying data.
Click through for the step-by-step process.