Microsoft 365 is the default cloud communications stack. ERA Communications targets regulated customers who cannot export mail and collaboration data to foreign SaaS.
| Criteria | Competitor | ERA One |
|---|---|---|
| Model | Cloud SaaS subscription | On-prem / air-gap in customer perimeter |
| Data location | Microsoft global cloud | Customer data center only |
| Phone-home | Required for service | None in air-gap mode |
| Mail / calendar | Exchange Online | ERA Mail Server + Client |
| Teams / meetings | Cloud Teams | ERA Conference on-prem |
| AI / Copilot | Cloud processing | ERA Comms AI — local LLM |
| Compliance | Depends on region & DPA | Full data sovereignty by design |