What is Asteria?

Without further context, "Asteria" is ambiguous. It could refer to a variety of things, including: 1) A genus of starfish. If so, this isn't typically considered a technology. 2) Possibly a codename or internal project name within a company. Without more information, a specific explanation of its function is impossible. 3) In Greek, Asteria is a Titan goddess of falling stars and nighttime divination. Therefore, there is no commonly used technology directly associated with the name.