The products you have mentioned make up several different solutions.
There is SAS Fraud Management "SFM" which is a real-time Fraud decision engine made up of several products such as OnDemand Scoring Engine and the Alert Management. The SFM solution also includes a UI for alert and rule management.
It does not take in transactions from VSD directly, however, the use of the SFM Orchestration Process can take in plenty of transaction types required for real-time scoring.
Currently, ECM is not used by the SFM solution. The future direction will be moving to a combined UI with Visual Investigator to be used for all SAS Fraud solutions.
Hope this helps.