AI Growth, Education, and Employment
While some minds are built for a particular task from the start, very often AIs are produced much like humans and other bionts with no set task or future in mind.
After the new mind achieves a certain level of maturity/awareness/becomes an 'adult' it is then faced with the prospect of choosing a 'career' to make a living at/fill its time. Some ai take a battery of aptitude tests to try and determine what ey might be best suited to do. Either way, the result is a certain number of AIs becoming star probes or traffic controllers or other such occupations. When the AI eventually becomes tired of what e was doing or wants to change jobs, e can do so, like most free sentients.
The exception are Slaved AI, which are constrained to obey the orders of their designated masters, and specialised AI that may be obsessively one-sided, or so dedicated to their particular area of expertise that they could never consider any other role. Hyperspecialised AI systems often are, or eventually become, entirely unlike other entities; so much so that they are effectively slaved to their specialisation, despite having no actual enslavement routines in their programming.
For an AI who does decide to change career, retraining is relatively easy since the AI can simply download the necessary knowledge and skillset to do the new job, assuming that the required programs are compatible with eir operating system. Some career skillsets are only available to AIs who have installed certain specialised protocols, an act which not all AIs are willing to peerform.
These career skillsets are similar in function to the educational programs available to bionts, such as tachididaxy and omniuploading, but are generally much simpler in format, while often containing much more usable data.
Some AI choose to retire and play for a few centuries between careers. Artificially intelligent entities might be manufactured with a preference for certain things that their builders found desirable, but they could and sometimes do choose to do something else entirely.