Software Assurance Advisory, Know Exactly When SA Pays Off
Software Assurance is the most misunderstood line item in Microsoft licensing. Sometimes it saves tens of thousands; sometimes it's wasted budget. CentralLense provides a data-driven SA assessment that tells you exactly which products benefit from SA coverage and which ones don't, before you write the check.
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What Software Assurance Unlocks
New version upgrades included at no extra cost for the life of the SA agreement
Fail-over rights, run a passive secondary server instance at no additional license cost
License mobility to move workloads to third-party hosters and shared infrastructure
Azure Hybrid Benefit eligibility, save 40-55% on Azure VMs with your on-prem licenses
Every Software Assurance Benefit, Explained
CentralLense evaluates each SA benefit against your specific environment to determine which ones deliver real ROI and which ones you'll never use.
Version Upgrade Rights
SA entitles you to deploy any new version of the covered product released during your agreement term, at no additional cost. If Microsoft releases Windows Server 2028 while your SA is active, you get it included. The value depends on your upgrade cadence: if you upgrade every release cycle, SA almost always pays for itself through version rights alone.
Fail-over Server Rights
SA on Windows Server and SQL Server grants passive fail-over rights: you can run a secondary instance that mirrors the primary for disaster recovery without purchasing a separate license. Without SA, every fail-over instance requires its own full license. For organizations running HA pairs, this benefit alone can offset the SA cost.
License Mobility
SA enables license mobility through Software Assurance, the right to deploy your on-premises server licenses on shared hardware at an Authorized Mobility Partner (hosting provider). Without SA, licenses are locked to specific hardware. This benefit is essential for organizations moving workloads to colocation facilities or managed hosting environments.
Azure Hybrid Benefit Eligibility
Active SA on Windows Server and SQL Server licenses unlocks Azure Hybrid Benefit, the ability to run Azure VMs and Azure SQL at significantly reduced rates (typically 40-55% savings vs. pay-as-you-go). For organizations with hybrid or cloud-migration strategies, AHB is often the highest-value SA benefit by a wide margin.
Training Vouchers
SA includes training vouchers redeemable at Microsoft Certified Partners for instructor-led training. The number of vouchers scales with your license count. Many organizations never redeem these, CentralLense ensures your team takes advantage of the training benefit to build in-house expertise on the products you're licensing.
TCO Modeling
CentralLense builds a product-by-product TCO model comparing the cost of SA against the cost of buying new version licenses outright at upgrade time. We factor in your upgrade cadence, fail-over requirements, hosting strategy, and Azure plans to produce a clear recommendation: add SA, skip SA, or add SA selectively on specific products.
Software Assurance Questions, Answered
These are the questions every IT and procurement leader asks before adding (or renewing) Software Assurance.
Software Assurance is an add-on maintenance agreement you can attach to eligible Microsoft perpetual licenses (Windows Server, SQL Server, Office LTSC, etc.). It typically costs 25-29% of the license price per year, paid upfront for a 2- or 3-year term. In return, you get version upgrade rights, fail-over server rights, license mobility, training vouchers, Azure Hybrid Benefit eligibility, and other benefits. Whether the cost is justified depends entirely on which benefits you'll actually use, CentralLense models this for you.
SA is available for most Microsoft on-premises perpetual products: Windows Server Standard and Datacenter, SQL Server Standard and Enterprise, Office LTSC Professional Plus and Standard, Windows Desktop (Enterprise upgrade), System Center, Exchange Server, SharePoint Server, and others. Subscription products like Microsoft 365 do not require SA because updates are included in the subscription. CentralLense maintains a current SA eligibility matrix across all products.
The breakeven depends on your upgrade cadence. If Microsoft releases a new version every 3 years and your SA costs 25% per year, you pay 75% of the license price over 3 years in SA, versus 100% to buy the new version outright. In that scenario, SA saves 25%. But if you skip a version and upgrade every 6 years, you've paid 150% in SA versus 100% for a new license, SA was the more expensive option. CentralLense models your specific upgrade history and plans to calculate the exact breakeven.
You keep the perpetual license and the last version you were entitled to under SA. You lose all forward-looking benefits: no more free version upgrades, no fail-over rights, no license mobility, and no Azure Hybrid Benefit. Importantly, once SA lapses, you cannot renew it, you would need to purchase new licenses with SA attached if you want coverage again. This is why timing the renewal decision is critical.
Yes. SA on SQL Server grants one passive fail-over instance at no additional license cost. The fail-over instance must be truly passive, it cannot serve queries, run reporting, or handle any active workload except during a fail-over event. Without SA, a fail-over SQL Server instance requires its own full license (Standard or Enterprise). For organizations running Always On Availability Groups, this benefit alone can justify the SA cost.
Azure Hybrid Benefit (AHB) lets you use your on-premises Windows Server or SQL Server licenses with active SA to run Azure VMs or Azure SQL at reduced rates. For Windows Server, AHB saves up to 40% on Azure VM compute costs. For SQL Server, AHB saves up to 55% on Azure SQL Managed Instance or SQL Server on Azure VMs. You must have active SA on the on-premises license to activate AHB. CentralLense calculates the projected Azure savings against the SA cost to determine net ROI.
That's exactly what our SA Advisory service does. We audit your current license inventory, upgrade history, fail-over architecture, hosting arrangements, and Azure strategy. We then model the TCO for each product with and without SA. The output is a product-by-product recommendation: add SA, skip SA, or add SA selectively. Most clients find that SA makes sense on some products but not others, blanket SA or blanket no-SA is rarely the optimal strategy.
No. Software Assurance is a maintenance agreement attached to perpetual on-premises licenses. A Microsoft 365 subscription includes the software, updates, and cloud services in a single per-user/month fee. SA and M365 serve different licensing models. If you've fully moved to M365 for productivity, you wouldn't need SA on Office. But you may still need SA on server products like Windows Server and SQL Server if you're running on-premises infrastructure alongside your M365 tenant.
Stop Guessing Whether SA Is Worth It
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