Start with the milestone, not the headline.
“End of life” can describe several different events. End of sale means a vendor stops taking new orders. End of active or mainstream support usually changes what fixes and assistance are available. End of security support is the milestone this tracker prioritizes: the published end of standard security maintenance for that release.
Check the exact edition you run.
A version number alone is not always enough. Home and Enterprise editions, long-term servicing releases, hardware appliances and cloud-managed services can have different policies. Match the installed edition and release against the source record before adding the date to your change calendar.
Treat an extension as a separate decision.
Some vendors offer paid or conditional extended coverage. It can buy migration time, but it may require enrollment, a qualifying agreement or a supported configuration. A date on an extended-support programme is not proof that your environment is enrolled.
Turn a deadline into a migration plan.
Identify the owner, capture application dependencies, choose a supported destination and reserve a test window. Work backwards from the deadline with time for rollback. The earlier you verify compatibility and licensing, the more options you retain.
Source references
Editorial guidance from EOL Alerts. Check current vendor documentation for your exact product, edition and support agreement.
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