In the previous chapter, we discussed IBM Worklight's client-side tools and their capabilities. We also discussed the range of components required to build a mobile application interface and managed to run them on real devices. In this chapter, we'll examine the Worklight's server-side adapter component in detail to understand how the adapters are utilized to build a connection between mobile applications and the company's backend business service for data manipulation and handling. The main purpose and reason of this chapter is to introduce you to the mechanism of data communication and handling throughout the mobile application in a heightened manner.