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 can 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 you 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. A release can be a main or controlled release. Main release When an update of a new version is considered stable, it is provided as a main release. Controlled release When an update of a new version is not yet considered stable enough to be provided as a main release, it is provided as a controlled release. When a new version is released for the first time, it is always provided as a controlled release because it is not yet considered stable enough. The first updates of a new version are usually also provided as controlled releases. With every update, the stability of a new software version increases. So eventually an update is released that is considered stable enough and provided as a main release. You can choose to leave out controlled releases and upgrade only to software versions that are provided as main releases. This means, however, that you will have to wait longer for new features and enhancements, which are usually only provided with new versions. You can install an upgrade on the Web Gateway interface or from a system console that is connected to the appliance system. The upgrade procedure is different for main and controlled releases. 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 provides the platform for Web Gateway to run on as a virtual appliance. Installation on a blade server You can install Web Gateway on a blade server, which then provides the hardware platform that Web Gateway runs on as a physical appliance. A blade server is usually part of a server farm that resides in a blade system enclosure.