SPICE (ISO/IEC 15504)

1. SPICE: Software Process Capability Assessment and Systematic Improvement

    flowchart LR
    A["Traditional software development"] -- "Improving process performance capability" --> B["SPICE (ISO/IEC 15504)"]

Core: An international standard for software process improvement and capability determination — a framework for systematically assessing and improving an organization’s process performance capability.

Characteristics:
(Capability dimension) Assesses process maturity by defining six levels.
(Process dimension) Classifies and manages the scope of an organization’s processes.

2. SPICE Process Assessment Model

A. Capability Dimension (Capability Levels)

(A six-level framework that determines process performance capability)

    flowchart TD
    ROOT["Capability Dimension (6 levels)"]
    L0["0. Incomplete"]
    L1["1. Performed"]
    L2["2. Managed"]
    L3["3. Established"]
    L4["4. Predictable"]
    L5["5. Optimizing"]

    ROOT --> L0 --> L1 --> L2 --> L3 --> L4 --> L5

    style ROOT fill:#1E3A5F,color:#fff

Levels 0-1: The process is not performed, or is performed only at a basic level.
Levels 2-3: The process is managed, standardized, and established.
Levels 4-5: The process is data-driven, quantitatively predictable, and continuously optimized.

B. Process Dimension

(Classification of processes within the organization and the execution mechanism for each area)

    flowchart TD
    ROOT["Process Dimension (Categories)"]
    
    P1["Primary Process"]
    P2["Support Process"]
    P3["Organizational Process"]

    ROOT --> P1
    ROOT --> P2
    ROOT --> P3

    style ROOT fill:#1E3A5F,color:#fff

Process Category	Detailed Classification	Key Execution Mechanism
Primary Process	Acquisition, supply, development, operation, maintenance	A core value-chain mechanism that realizes products/services from customer requirements
Support Process	Quality assurance, configuration management, documentation, verification	A management mechanism that ensures the quality of the executed processes and detects errors early
Organizational Process	Organizational management, process improvement, infrastructure management	A mechanism for establishing organization-wide standard processes and supporting continuous improvement

3. Expected Effects and Applications

Category	Expected Effect	Application
Quality	Improving process quality	Preventing defects and ensuring consistent software development quality
Operations	Systematizing processes	Diagnosing and improving the organization’s process capability level (e.g., CMMI)
Technology	Strengthening interoperability	Improving alignment between systems through compliance with standard processes

7S Model ISP (Information Strategy Planning)