Based on past IDC surveys, partners who work alone will achieve less revenue and their customers will be underserved. In addition, the Unrealized Revenue Potential is $175 billion for 2009 according to the International Association of Microsoft Certified Partners (IAMCP). If you can't offer complete solutions to your customers, it also opens things up for the competition and you are more likely to be viewed as just a vendor rather than a trusted advisor by your customers. Joining forces with another partner to leverage resources and skill sets can help you both tap into additional revenue as well as increase your customer's satisfaction.