ERA One

ERA Communications vs Microsoft 365 (Exchange Online)

Microsoft 365 is the default cloud communications stack. ERA Communications targets regulated customers who cannot export mail and collaboration data to foreign SaaS.

CriteriaCompetitorERA One
ModelCloud SaaS subscriptionOn-prem / air-gap in customer perimeter
Data locationMicrosoft global cloudCustomer data center only
Phone-homeRequired for serviceNone in air-gap mode
Mail / calendarExchange OnlineERA Mail Server + Client
Teams / meetingsCloud TeamsERA Conference on-prem
AI / CopilotCloud processingERA Comms AI — local LLM
ComplianceDepends on region & DPAFull data sovereignty by design
Summary: Choose Microsoft 365 for global SaaS convenience. Choose ERA Communications when sovereignty, air-gap and a single local vendor (with ERA Control and Office) are mandatory.
Head OfficeGeneva, Switzerland
Engineering CenterWarsaw, Poland
ERA One