About upgrading
The upgrading documentation describes how to upgrade each part of your SDL Web system to SDL Web 8.5.
- Versions from which you can upgrade
SDL Web supports only a specific set of upgrade paths to upgrade to SDL Web 8.5. - Before you start upgrading
To get a broad overview of what has changed since previous product releases, read through the release notes for this release. - Staged upgrade
SDL Web supports a staged upgrade: you upgrade your Content Manager first, and perform an upgrade of your Content Delivery software components, one machine at a time, after your Content Manager upgrade is completed. A staged upgrade is possible for all releases from which you can upgrade to SDL Web 8.5, that is, SDL Tridion 2013 SP1 HR1 or SDL Web 8 with Cumulative Update 1 applied. SDL strongly recommends against attempting a staged upgrade on your own; instead, you should contact your SDL representative first.