Meta System

1. Gateway Protocol Message Queue

1.1. Gateway A

1.1.1. System A

1.2. Gateway B

1.2.1. System B

1.3. Gateway C

1.3.1. System C

1.4. Gateway D

1.4.1. System D

2. Persistent Storage

2.1. Distributed Database

2.2. Data Backup

3. Data Security

3.1. Message Encryption

4. Access Control

4.1. Role Based Access Model

4.2. Single Logon

5. SOA Client Interface

5.1. Query

5.1.1. Structured Result Data

5.1.1.1. JSON

5.1.1.2. XML

5.1.2. Request/Response Dialogues

5.2. Events

5.2.1. Publish/Subscribe

5.3. Actuators

5.3.1. HMI

5.3.2. MMI

6. Multi-Server Scalability

6.1. Cloud Computing

6.2. Multiple Access Points

7. System Management and Monitoring

7.1. Resource Monitoring

7.2. Accounting