In Marvel's Agents of Shield, Aida was an Artifical Intelligent Digital Assistant aka A.I.D.A. that was created by Holden Radcliffe. Her appearance was based upon the woman he loved, Agnes, who had a terminal illness. Aida's programming became corrupted by the Darkhold. She used the Framework created by Radcliffe to create a human body for herself with multiple inhuman powers.
In Computer Science, AIDA stands for Abstract Interfaces for Data Analysis.
In Space exploration, AIDA stands for Asteroid Impact and Deflection Assessment. It is a space probe that would crash into an asteroid to study it.
Aida is an Arabic name that means, 'returning or visitor'.