I would like to draw your attention to the recent publication of "Transregional and Regional Elites: Connecting the Early Islamic Empire" (Hannah-Lena Hagemann & Stefan Heidemann, eds.). This volume is the first of several to collect the research carried out within the ERC project "The Early Islamic Empire at Work" (2014-2019). The contributions - based on papers given at our 2016 conference on elites of the early Islamic Empire - look at elite structures and networks in various regions of the empire and analyze elite groups across social, religious, geographical, and professional boundaries. The studies show that certain patterns of governance and interaction were shared among otherwise highly diverse regions and elites, which was an important factor for the success of Late Antiquity's largest empire.
The volume is available in open access on the publisher's website at https://www.degruyter.com/viewbooktoc/product/537553.