Server, Remote: A server built by the Corporation. Assets and agendas can only be installed in remote servers.
Of the Corporation's servers, remote servers are the ones s/he creates to install and use agendas and assets. Remote servers can also contain any number of upgrades. A remote server is created by installing the first agenda, asset, or upgrade in it or by installing the first piece of ice over it. A remote exists only as long as there is at least one card installed in or protecting it.
A remote can have any number of ice installed protecting it, any number of upgrades installed in it, but only either one agenda or one asset installed in it at any given time.
The Corporation has no remote servers at the beginning of the game. The Corporation creates remote servers by installing cards. Cards in the remote servers are active if rezzed and inactive if unrezzed.
If the Corporation choose to create a remote server when installing a card, he installs the card by placing it facedown in a discrete location in his play area. Agendas, assets, upgrades, and ice can all be used to create a new remote server. If the Corporation creates a remote server by installing ice, the server exists, but is considered to be empty. An empty server can still be run against by the Runner.