Ancillary Justice
I just finished Ancillary Justice (2013) by Ann Leckie. Fantastic!

I heard about if from Molly White, who posted about her display at her library! Thanks, Molly!
It is apparently part of a trilogy, but I think I am satisfied. I thought the ending was great and I don't know if I need to read more right now. Perhaps I will someday, but I don't feel compelled to right away.
I was disappointed to read there was a television adaptation that collapsed. I would watch the hell out of that show!