All Change for Office 365 eDiscovery on July 1 2017

Further signs of Microsoft discarding the on-premises roots of Office 365 in favor of consistent cross-workload functionality comes when the Security and Compliance Center takes center stage for eDiscovery from July 1. Because compliance operations usually occur over extended periods, now's the time to prepare for this transition.
https://www.petri.com/office-365-ediscovery-changes