Maturity Level concept using Automotive SPICE

CL & ML : Differences

Characteristics	Capability Level (CL)	Maturity Level (ML)
Result Applicability	Process	Organization unit
Scope Process & CL	§   Any number of processes can be selected (mostly – VDA Scope). §   CL can be defined for respective process.	§   Pre-defined set of processes for respective ML
Scope Project	§   Single project (mostly) OR §   Multiple projects	§   Class 1: 4 instances (Minimum) §   Class 2: 2 instances (Minimum) §   Multiple projects to represent “organization unit” appropriately. §   Minimum number of sample shall satisfy “Class” of assessment rule.
Rating Aggregation	§   No aggregation within project (mostly) §   For multiple projects - aggregation as per rule (R1/R2/R3) can be applied.	§   Aggregation is done as rule rating rule o   R1 – Rate BP/GP & aggregate o   R2 – Rate PA & aggregate

CL & ML Assessment : Steps

#	Capability Level (CL)	Maturity Level (ML)
1	§  Identify project (or Projects)	§  Define assessment scope o   ML (Predefined process set get selected) o   Class of assessment
2	§  Define assessment scope o   Processes – as per project(s) development scope o   CL for respective processes	§  Define rating rule o   R1: Rate BP/GP & aggregate o   R2: Rate PA & aggregate
3	§  Define rating rule o   R3: Rate PA & no aggregation (mostly used) o   R2: Rate PA & aggregate o   R1: Rate BP/GP & aggregate	§  Select projects (sampling) to represent OU & satisfy rule of “Class of assessment” o   Class 1 : minimum 4 instances o   Class 2: minimum 2 instances
4	§  Perform assessment as per #2	§  Perform assessment s per #3
5	§  Derive process capability as per #3 & report the result	§  Derive ML rating as per#2 & report the result