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Introduction

This use case focuses on showcasing and assessing the SONATA system capabilities in order to enhance a virtual CDN service with features like elasticity and programmability. The business case of Content Delivery Networks is well established in the current telecommunications environment. A series of business relationships are affected by various deployment scenarios that are possible within the current setting. SONATA is building upon the aforementioned status in order to allow for an enhanced vCDN service, focused around enablers provided by the Service Platform that allow high levels of programmability and flexibility.

Demo scenarios

Two scenarios are anticipated for this pilot, namely:

• Classic vCDN mode: Content originates from a single content provider or multiple ones, distributed across the vCaches and eventually delivered to a huge number of subscribers. This scenario will be used to highlight placement and scaling functionalities of the SONATA SP.
• User Generated Content (UGC) based vCDN mode: Content also originates from the end-users (allowing various sub-cases of social networking content exchange). The SONATA SP allows the flexibility of dynamically extending the vCDN service, accommodating additional sources from alternative Content Providers. The twist of this scenario is that the UGC content is identified and cached at the edges, allowing resource optimisation at the edges. This scenario, reveals the interaction of the Service Platform with information that stems from the network (either as traffic information or content information or end-user information) in order to dynamically configure and optimise the CDN for an improved user experience.