Services descriptions based on "typical" analysis session

* VO
    - authentication
    - authorization
        - security
        - access/allocation (sharing)
    - accounting
    - auditing
* SW Installer
    - Automatic
        LCG/VDT: Packaging and Metapackaging, config mgmt
    - versioning / version control
* Virtual Data Catalog + Service
    - Physics expression -> ? { logical data product } + { provenance }
* DS Catalog
    - 
* RMS
    - { logical data product } -> { physical data product (files, databases) }
* RB Resource discovery; matchmaker; resource reservation
    - RGMA <-> MDS2
    - Job -> closest data


* Abstract Job Submit
    - Expression -> AJS -> specify plan; code, physical data
    This is more or less equivalent to the abstract planner
* Concrete job submit
    - Job splitting

* Job Execution System
    * Job Control
    * Job Status
    * Control / Comm (A4)
    * Job / Client interaction
        - Job client with interfaces and supports queries and responses
        - Jobs are basically services
        - load python code


* Estimators
* Metadata
* RMS (Mover; RLS; Estimator)

Physics Exp -> Logical files + provenance
- existence
- creation; plan
    - estimate
    - track
    - error
- time estimate
- similarity

VDS
    - creation if needed

RMS
    - file location
    - estimatora => choose (planner)
    - extraction, merging