At the start of the chapter, we examined several types of integration scenarios that exist in enterprises. Some of the key integration scenarios that exist in enterprises are the following:

• Information portals
• Data replication
• Shared business functions
• Service-oriented architectures
• Distributed business processes
• Business-to-business integration

After covering these topics, the main challenges faced in application integration were discussed. The techniques to overcome these challenges were also discussed. In the next section of the chapter, we discussed several types of messaging patterns at length. After messaging patterns, prominent mobile integration patterns were discussed. We concluded the chapter with a brief discussion of the API management pattern, which is the most recent trend in the industry.