ting the dynamic implementation of security policies Acquiring and managing massive volumes of security event logs Providing instant notification services to authorized administrators and system owners ASTRA core presents these functions using a comprehensive user-interface portal. It also seam- lessly interoperates with other key management systems such as operations support systems (OSSs), Cloud ASTRA ASTRA Astra Platform Features Security Policy Intelligence Orchestration Build & ASTRA Logging Config User Interface Monitoring Satellites Cloud ASTRA Core ASTRA Threat and Data Systems FIGURE 9.18 Functional ASTRA architecture. Building the Network of the Future business intelligence (BI) systems, and the ONAP, IAM, and security analytics systems discussed earlier in this chapter. ASTRA satellites provide the ability for ASTRA to manage and control the security protection of distributed cloud environments. Lightweight ASTRA satellites work with ASTRA core to pro- vide a complete set of command and control functions and telemetry services that ensures effective security management including distributed security event collection and managing the distribution of event data to authorized subscribers. ASTRA satellites can be extended to implement any service that operates in the distributed cloud environment. One of the keys to the effectiveness of the overall ASTRA architecture is that it utilizes APIs to enable an open and effective integration strategy. The use of agile development techniques with a CI model provides dynamic and responsive software delivery capability to support new feature and function introduction. The next section will explore the multifaceted and multilayered security protection capabilities provided by ASTRA. 9.5.3.3 ASTRA Defense in Depth AT&T's own experience over the years with the growing cyber security challenge of cloud computing and the erosion of the security perimeter, has led with an approach that addresses both the cloud secu- rity implementation issues as well as the dissolving per