Microsoft 365

Three triggers. Seat count — Business plans cap at 300 seats per tenant. Advanced security and compliance — eDiscovery (premium), insider risk management, customer key, advanced data residency and information protection beyond labels live in E3/E5. Windows Enterprise — if you want the Windows 11 Enterprise SKU bundled with the user license, that comes with M365 E3/E5, not Business Premium.

If none of those apply, Business Premium often gives you Defender for Business and Intune for less than E3 with similar day-to-day functionality.

Two licenses, in order. First, each user needs a qualifying Microsoft 365 base plan: Business Standard, Business Premium, E3, E5, or A3/A5. Education Faculty also qualifies; consumer Personal/Family does not.

Second, add the Microsoft 365 Copilot add-on per user. It is purchased through CSP and requires an annual commitment. Once licensed, Copilot appears in Word, Excel, PowerPoint, Outlook, Teams and on the Microsoft 365 web. Pre-deployment, audit your SharePoint and OneDrive permissions — Copilot can surface anything the user already has access to, so over-shared sites become a data-governance problem.

Azure Arc extends Azure's management plane to servers, Kubernetes clusters and SQL databases running outside Azure — on-prem, in AWS, or at the edge. Once connected, those resources appear in the Azure portal and can be managed with Azure Policy, Update Manager, Defender for Cloud and Monitor.

The Arc connection itself is free. Individual services you turn on (Defender for Servers, Update Manager, SQL Managed Instance enabled by Arc, Azure Monitor) are billed per their normal Azure rates. There is no separate "Arc license".

Azure Hybrid Benefit (AHB) lets you reuse Windows Server and SQL Server licenses with active Software Assurance on Azure VMs and Azure SQL — without paying for the Windows or SQL component a second time. The Azure VM price drops to the "compute only" rate, saving roughly 40% versus pay-as-you-go.

To use AHB, the license needs an active SA contract or an active subscription, and you toggle the Hybrid Benefit flag on the VM or SQL resource in the Azure portal. Microsoft permits dual-use for 180 days during a cloud migration, so you can keep the on-prem workload running while you cut over.

Microsoft prices the first Dynamics 365 app per user at the higher "base" rate. Each additional qualifying app for the same user is sold at the "attach" rate — typically about 70% less. This rewards users who span multiple Dynamics modules (Sales + Customer Service + Field Service).

The catches: only certain apps qualify as a base, and the attach price applies only to that same user. You cannot mix and match across the team. Plan the user-to-app mapping carefully — getting it wrong inflates the cost by thousands per year on a small team.

Three tiers. Power BI Pro ($14/user/month, included in E5) lets a user publish and view reports in workspaces — the workhorse SKU. Power BI Premium Per User ($24/user/month) adds paginated reports, AI features and larger model sizes per user. Premium capacity (P SKUs, F SKUs in Fabric) is a fixed-cost dedicated compute pool — everyone in the org can view reports without a per-viewer license, while authors still need Pro or PPU.

Rule of thumb: under 250 viewers, individual Pro licenses are cheaper; above that, capacity-based pricing wins.

Cloud Solution Provider (CSP) is the modern Microsoft channel where a partner manages your subscription. Billing is monthly or annual, seats can scale up and down each month, and the partner handles support tickets. Best for cloud-first workloads (Microsoft 365, Dynamics 365, Azure) where flexibility matters.

Volume Licensing (Open Value, MPSA, Enterprise Agreement) is the traditional channel for perpetual on-premises licenses — Windows Server, SQL Server, Office LTSC. Three-year commitments are typical, with optional Software Assurance for upgrade rights. Best for perpetual server licensing where you want to own the asset.

Most organizations use both: CSP for the cloud subscriptions and Volume Licensing for the on-prem perpetual licenses.

It depends on whether you want a subscription or a one-time purchase, and whether you need the cloud services.

Microsoft 365 is a per-user subscription that gives you the latest Office desktop apps plus Exchange Online mail, OneDrive, Teams, and (on Business Standard and higher) SharePoint Online. New features arrive monthly. Cancel and the desktop apps go read-only after 30 days.

Office Home & Business 2024 (Retail) and Office LTSC 2024 (Volume) are one-time purchases — pay once, keep the apps forever, no cloud services included. Locked feature set: no new functionality, only security patches for 5 years. The fit is regulated, air-gapped, or kiosk environments — or anyone philosophically opposed to subscriptions.

Pick subscription (Microsoft 365 Apps / Business Standard) if you want: the latest features as they ship, cloud services (Teams, Exchange Online, OneDrive), Copilot, and predictable per-user monthly pricing.

Pick perpetual (Office LTSC 2024 via Volume Licensing) if you need: a one-time purchase, no cloud dependency, locked feature set for regulated environments, or offline-only operation. The trade-off is no new features for 5 years and no Copilot, ever.

For most knowledge-worker organizations, subscription wins on TCO over a 3-year horizon. Perpetual wins for specialized, locked-down scenarios.

No. Visio and Project are licensed separately from Microsoft 365 — there is no Microsoft 365 plan that bundles them. Both come as standalone subscriptions (Visio Plan 1/2, Project Plan 1/3/5) or as perpetual desktop SKUs (Visio Standard/Professional, Project Standard/Professional).

If you only need a handful of users with Visio or Project, the per-user subscription is usually the cleanest path — billed alongside your Microsoft 365 seats through the same CSP.