Enterprise service buses (ESBs), comprehensive integration solutions (CISes), and integration appliances offer a range of overlapping features to meet integration challenges. Forrester recently surveyed 167 client firms to determine how they are using these tools today and to identify key trends regarding their future adoption. All three categories are popular, but their strengths and weaknesses for different use cases vary significantly. Application development professionals and enterprise architects should use this research to shape their organization's enterprise integration strategy.