This chapter discussed modern technology trends and the role of RESTful APIs in each of these areas. Starting with the cloud, we discussed the different offering models and saw an example of provisioning a virtual machine in the Oracle Cloud platform using a RESTful API. Then we touched upon the IoT and how RESTful APIs are used in connecting devices following the event-driven architecture pattern. Also, we briefly discussed social media and single-page applications and its benefits of improved user experience with RESTful API usage. The chapter concluded by discussing OData in short and its usage. With this chapter, we finish our journey through RESTful Java Web Services, Third Edition. We began with the theory of REST, continued with the JAX-RS APIs and the Jersey framework, and completed our study with topics on security, API documentation, design guidelines, and emerging technology trends.  We hope that you enjoyed reading this book. 

We strongly recommend the reader of this book to practice different recipes covered in the book for designing and implementing RESTful APIs. We also suggest further reading of the following books from Packt covering related topics on RESTful web services:

• RESTful Web API Design 
• RESTful Java Patterns And Best Practices
• RESTful Java Web Services Security