Running Sites 9.0 here and wondering, is it safe to install the latest version of the Sdl.Web.Delivery Nuget Package, 11.0.11022? Are they all compatible with the CD of the respective Tridion version or is there a dependency between certain hotfixes of the CIS-es and these packages.

One other thing which is puzzling is this anomaly. Why is 11.0.1097 updated just recently? Why does it have a newer modified date than the latest version?

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2 Answers 2


As usual in Service-Oriented Architectures such as CIL/CIS, the client and server versions are rather loosely coupled. That is: there is not a 1:1 relationship between the CIL and CIS versions you can use together.

On the other hand, you also cannot expect any CIL version to be 100% compatible with any CIS version. In general, backwards compatibility can be expected (i.e. an older CIL version should work against a newer CIS), but forward compatibility (i.e. using a newer CIL version against an older CIS) is trickier.

This answer is intentionally vague; it makes sense to check with Customer Support if you intent to use two quite different versions of CIL and CIS.

Regarding the versioning scheme used for CD NuGet packages: this is ${major}.${minor}.${patch}${build}

Note that the patch/SP/CU version and build number are combined into the third part of the semantic version number. Also note that the patch/SP/CU number 0 is not explicit in the third digit. So:

  • 11.0.1055 is actually 11.0.0 build 1055
  • 11.0.1097 is actually 11.0.0 build 1097
  • 11.0.11019 is actually 11.0.1 build 1019.

If there are multiple builds for a given major/minor/patch version, this means that hotfixes were released for that version. The specific version you're wondering about is a recent hotfix for 11.0.0.


Rick is spot on.

To add some more clarity on that 11.0.1097 release - this was a hotfix for a specific customer. But in general I would use the latest 11.0.1xxxx version available. They are indeed intended to be compatible with all other 11.0.x versions (unless specifically identified by Customer Support).

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