The Gateway is the section in Wedge that allows defining custom gateway (vGateway or IPsec type). A Gateway is part of an Acreto Ecosystem that provides edge routing for VPN connections and direct connections. By default, each ecosystem owns one default gateway, but you can create as many gateways as you need.
The search option on this section allows searching for any gateway that exists in this Ecosystem. Searching works on any text-type value, this means that you can search by any value that describes the object.
The Gateway section allows creating a new Gateway by clicking on the + Add New Gateway button.
If you want to know more about how to create the Gateway follow this article.