My own go "micro" packages are small packages that are being incubated before potentially becoming full blown modules.
Think of this as a repo for utility packages that are not big enough to warrant having a seperate repo (and all the complexities that come with that) and also I don't want to keep copying the same code into every project I work on.
Packages that start with the prefix "aj" (e.g. ajio) contains the prefix to distinguish it from the go standard library packages.