Which type of installation do you need? Web Gateway is installed as an appliance in your local network to protect it against threats arising from web usage. Which type of installation you need depends on your circumstances and environment. First-time installation When you install Web Gateway for the first time in your local network, you can install it as a physical or virtual appliance. Physical appliance If you install Web Gateway as a physical appliance, you set it up on a hardware platform. The appliance software is preinstalled or can be downloaded. Preinstalled software — When you purchase a new hardware platform for Web Gateway, the appliance software is preinstalled on this platform. Downloaded software — You download the software in ISO or USB format from the Content & Cloud Security Portal, then install it. Virtual appliance If you install Web Gateway as a virtual appliance, you set it up on a virtual machine that you create on a suitable host system. You download the appliance software in ISO format from the Content & Cloud Security Portal, then install it. Upgrade installation When you have already installed Web Gateway in your local network, you can upgrade the appliance software after a new version or an update is released. You can install an upgrade on the Web Gateway interface or from a system console that is connected to the appliance system. A release can be a main or controlled release. Upgrade procedures differ accordingly. Main release After three new versions of Web Gateway have been released, an update of the third version is provided as a main release, usually, the second or third update. For example, after versions 8.0, 8.1, and 8.2 are released, the 8.2.2 update might be released as a main release. Controlled release All new versions and updates that are not released as main releases are controlled releases. You can upgrade to every controlled release or upgrade only when a main release happens. A new version is usually released every four months, so it takes a year until three of them have been released. This means that if you only upgrade to main releases, you upgrade once in a year. It also means, however, that you'll have to wait longer for the new features and enhancements that are included in every new product version. Installation in an AWS environment You can install Web Gateway in an Amazon Web Services (AWS) environment. Within this environment, an instance of Web Gateway runs as one among various other AWS instances. Installation on an Azure platform You can set up a Windows 2016 Server on Microsoft Azure and use Hyper-V to create a virtual machine on this server that hosts another virtual machine, which Web Gateway uses as a platform to run on. Installation on a blade server You can install Web Gateway on a blade server, which Web Gateway uses as a hardware platform to run on as a physical appliance. A blade server is usually part of a server farm that resides in a blade system enclosure.