"In ancient Roman religion, Concordia is the goddess who embodies agreement in marriage and society. Her Greek equivalent is usually regarded as Harmonia, with musical harmony ...
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a metaphor for an ideal of social concord or entente in the political discourse of the Republican era. She was thus often associated with Pax ("Peace") in representing a stable society. As such, she is more closely related to the Greek concept of homonoia (likemindedness), which was also represented by a goddess.
Concordia Augusta was cultivated in the context of Imperial cult. Dedicatory inscriptions to her, on behalf of emperors and members of the imperial family, were common." - (en.wikipedia.org 30.10.2019)