The key to modern cybernetics for those species using such technology has been the advent of molecular computing devices that can be embedded and use body heat and blood sugars to power themselves.
The technology has been advanced further as part of endeavors to develop synthetic biological systems that are being used in various labs towards purpose-built life forms and even android research.
While experimental for Terrans the technology used by the Aratani is more mature. Many suspect the Aratani may have applied applications in real human form androids.
The Ilkanians are another race that have a few cybernetic implant products that utilise molecular computing, but based around their more digital based super conducting biology.
The Andorians, while not currently fans of cybertechnology did develop some of this technology, and it is believed the offshoot of this technology for purpose-built life forms may have led to their own experimentation with advanced androids.
The war with the Mechs may have led to this technology largely being abandoned in the Coalition.