Should Aka Have Periods? Is there a dot after aka?

AKA used to include dots between the letters as a general rule. However, many sources have removed the dots.
What is the proper way to write aka? Write AKA in all lowercase or all capital letters.
How do you write an aka in formal writing? Write AKA in all lowercase or all capital letters.

The abbreviation "aka", meaning “also known as”, need not be italicized, but periods after indicate it is an abbreviation.
A given name is a name given to a person at birth, usually by the parents.

AFK meaning can be literal or it can simply indicate that you aren’t online. AFK is a helpful phrase for communal online spaces.
While I know that AKA is also an acronym for "above the knee amputation", I’m going to ignore it.

As you can see, both forms do appear in print sources. You should choose "aka" over "a.k.a." unless instructed not to do so.
Use the full phrase. Never use "aka".
Essentially, it makes more sense to use AKA while picking a unique aspect and adding it to their name. Make sure you have a valuable suffix to add to the name. AKA fits textual and verbal conversations. However, always pronounce AKA with letters. Every AKA use is informal.
Referring to a significant designation.