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Practical technology help for homes and small businesses, from someone who knows how to make it work. Based in Martinez, serving Contra Costa County.

Practical IT guides, cheatsheets, and references from Jeremiah Ellington, drawn from more than 20 years of IT work in public sector and higher education.

Contact Info
Email hello@jeremiahellington.com
Location Martinez, CA (Serving Contra Costa County)
Contact Info
Email hello@jeremiahellington.com
Location Martinez, CA (Serving Contra Costa County)
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Cloud & Microsoft 365

Microsoft 365, Entra ID, and cloud services for small teams.

Cloud & Microsoft 365 · Start here

Microsoft 365 for a Small Office: Setup and Security Essentials

The settings that matter most when a small office runs on Microsoft 365: admin and emergency accounts, MFA, email authentication, shared mailboxes, sharing, backups, onboarding and offboarding, plus a short Exchange Online PowerShell toolkit.

Microsoft 365 Business Basic, Business Standard, and Business Premium (cloud-only tenants). Checked against Microsoft Learn documentation on 2026-10-27, not tested in a live tenant. Exchange Online PowerShell module 3.10.1 or later on PowerShell 7.6 or Windows PowerShell 5.1 · Updated