``` Surely there are other more important features delivery business value to be done rather than re-inventing (and then scaling and supporting) the delivery of mobile notifications. ``` the business value the service provided is that this allow the engineering organization to scale. Gojek has couple hundred engineers, split across multiple teams, where each teams own multiple services/products/applications, each with their own development cycle. Having a single abstraction provided as a service helps to mitigate the risks involved in changes to implementation details and external dependencies (e.g. GCM deprecation) since it abstracts it away completely.