3-Tier-App in mobile development is an alternate way to create the mobile stack. It is mainly focused on offloading data processing to a cloud infrastructure rather than the mobile itself. This saves the battery and computing power of the mobile. Mashup APIs leverage Apigeeâ€™s API platform to mashup different APIs in the cloud infrastructure itself instead of making multiple API calls from the mobile. Mobile app developers often have a need to expose their own APIs. Apigeeâ€™s platform provides a way to do that with minimal effort and zero cost. Both these themes are a proposal to architect the mobile stack in a different and efficient way, which is beneficial for both developers and end app users.