> For the complete documentation index, see [llms.txt](https://trustcenter.syntphony.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trustcenter.syntphony.com/trust-center/support-model/customer-support-policy/value-added-services/lifecycle-policy-and-legacy-support.md).

# Lifecycle Policy And Legacy Support

Syntphony Lifecycle Policy provides consistent and predictable guidelines for support throughout the life of a product, helping customers manage their IT investments and environments while strategically planning for the future.

All versions released by assets covered by Customer Support Plans have an associated support for 1 year. Most of the products will be able to update to newer versions in time, but in case EOS applies, NTT DATA will provide a minimum of 6 months notification prior to ending support for those versions.

Customer Support for PREMIER and PLATINUM plans can purchase **Legacy support service** depending on the scenario:

* **EOS (End of Support)**: EOS is often the precursor to EOL. The product would announce an end date after which they no longer support a system or service. This applies before a migration of users to newer versions of the product. In this scenario Legacy support provides you with an extra 1 year of support.
* **EOL (End of Life)**: This means the version should be taken out of service. In this scenario Legacy support provides you with an extra 1 year of support.
* **Service conditions:** Legacy support service is available for an additional licence fee and benefits from:
  * Extended technical support for deprecated product versions.
  * Updates, fixes, security alerts, data fixes, and critical patch updates.

 [*Back*](/trust-center/support-model/customer-support-policy/value-added-services.md)


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