A company specializing in providing a cloud communications platform as a service (PaaS) allows software developers to programmatically send and receive text messages using their services. Initially, this platform was not built for scalability or high availability, as all its components were hosted on a single server. The company now intends to redesign the platform's architecture to achieve both high availability and scalability.

Which two of the following options can be utilized to implement this new, improved architecture? (Select two)