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Series 11 · 10 Parts· 1h 26m

The Microsoft Platform End-of-Life Playbook

The 2025 Microsoft EOL cliff — Windows, Server, SQL, Office, Exchange: what end of support really costs, why ESU and "just upgrade" both fail, and the incremental path off each platform before the deadline.

Start reading · Part 1
Contents
  1. 01 The Microsoft End-of-Life Cliff: Why So Much Is Dying at Once 8 min read A coordinated wave of Microsoft end-of-life dates is hitting the enterprise stack in 2023–2025 — Windows 10, Server 2012, Office 2016, Exchange 2019, SQL Server. Why it clusters, how big the exposure is, and where the way out actually leads.
  2. 02 What Windows 10 End of Support Actually Changes (and What It Doesn't) 7 min read The day a Microsoft product reaches end of support, something specific changes — and something deliberately doesn't. What Windows 10 end of support stops shipping, what keeps running, and why the gap between them is the whole risk.
  3. 03 The Extended Security Updates Trap 8 min read Microsoft's Extended Security Updates keep an out-of-support product patched — for a price engineered to climb, a hard three-year cap, and only for some products. What Extended Security Updates cost, what they exclude, and why they buy time, not a destination.
  4. 04 Why 'Just Upgrade' Doesn't Fix It: The Windows 10 Migration Trap 8 min read The instinct is to swap the old OS for the current one and move on. But a Windows 10 migration stalls on the line-of-business apps pinned to the platform — old runtimes, ActiveX, drivers, DB-bound logic. It's an application problem, not a platform problem.
  5. 05 Windows 10 End of Life: The Desktop Fleet and the Apps That Pin It 9 min read Windows 10 end of life was October 14, 2025 — but the mainstream deadline, the ESU bridge, and the LTSC editions each land on different dates. The desktop image is the easy part; the line-of-business apps pinned to the fleet are the real migration.
  6. 06 Windows Server End of Life: Every Version's Deadline and the Workloads Pinned to It 10 min read Windows Server end of life runs on a version ladder — 2008 and 2012 already past, 2016 in January 2027, 2019 in 2029, 2022 in 2031. What each date means, and why the workloads pinned to the box, not the OS, are the real migration.
  7. 07 SQL Server End of Life: The Data Is Easy, the Logic Is the Work 9 min read SQL Server end of life spans 2014 to 2019, ending January 8, 2030. The data moves easily; the real work is the stored procedures, T-SQL, and app logic bound to it.
  8. 08 Office 2016 End of Life: The No-ESU Cliff for Office and Exchange 9 min read Office 2016 end of life hit October 14, 2025, alongside Office 2019 and Exchange 2016/2019. Unlike Windows and SQL Server, there's no paid ESU bridge — you must move.
  9. 09 The Path Off Legacy That Actually Works 9 min read Four Microsoft platforms hit end of life, one pattern strands you: the apps. Here is why big-bang rewrites fail and how incremental legacy modernization moves them.
  10. 10 Your Next 90 Days: Where to Start Before the Deadline 9 min read A modernization roadmap for the Microsoft end-of-life wave — inventory the estate against the deadline calendar, prioritize by risk and app-pinning, and prove the first slice.