When determining infrastructure requirements for a client often the question of whether to use BizTalk Standard or BizTalk Enterprise comes up. If the client is a small enterprise with limited redundancy and scaling needs the Standard Edition of BizTalk should work fine. If the client requires any redundancy or scaling then Enterprise is almost certainly necessary. In other words if your requirements dictate that you require more than one BizTalk server you will need the Enterprise Edition of BizTalk ......