By default, the FAST search site template is missing. It has to be enabled via PowerShell. Luckily, this is a very simple process.
Perform the following steps to enable the template:
- Login to one of the web front ends
- Open the SharePoint Management Shell (PowerShell for SharePoint)
- Type or Copy/Paste in the following making sure to change the “Identity” to your site collection:
$site = Get-SPSite -Identity https://nameofsite.com $site.Features.Add("5EAC763D-FBF5-4d6f-A76B-EDED7DD7B0A5")
Your output should look like the below screenshot