# ITIL Integration Plan for Alga PSA

## Overview

This document outlines the comprehensive plan for integrating ITIL (Information Technology Infrastructure Library) v4 best practices into the Alga PSA (Professional Services Automation) platform. The integration focuses on three core ITIL processes: Incident Management, Problem Management, and Change Management.

## Integration Approach

The ITIL integration follows a **non-disruptive enhancement approach**:
- Extends existing ticket system rather than replacing it
- Maintains backward compatibility with current PSA functionality
- Adds ITIL-specific fields and workflows while preserving existing data
- Implements ITIL processes as optional enhancements that can be enabled per tenant

## Phase 1: Enhanced Incident Management ✅ COMPLETED

### Objectives
- Implement ITIL-compliant incident priority calculation
- Add automated escalation workflows
- Integrate SLA monitoring and breach detection
- Enable incident categorization and tracking

### Key Features Implemented

#### 1. ITIL Priority Matrix
- **Impact × Urgency Matrix**: 5×5 grid calculating priority from impact and urgency levels
- **Automatic Priority Calculation**: Uses `calculateItilPriority(impact, urgency)` function
- **SLA Target Assignment**: Automatic SLA targets based on calculated priority
  - Critical (Priority 1): 1 hour
  - High (Priority 2): 4 hours  
  - Medium (Priority 3): 24 hours
  - Low (Priority 4): 72 hours
  - Planning (Priority 5): 168 hours

#### 2. Enhanced Ticket Model
Extended `ITicket` interface with 13 ITIL-specific fields:
```typescript
// Core ITIL Fields
itil_impact?: number;           // 1-5 scale
itil_urgency?: number;          // 1-5 scale  
itil_category?: string;         // Hardware, Software, Network, Security, Service Request
itil_subcategory?: string;      // Detailed categorization
resolution_code?: string;       // Standard ITIL resolution codes
root_cause?: string;            // Root cause analysis
workaround?: string;           // Temporary workaround provided

// SLA and Escalation Tracking
sla_target?: string;           // Target resolution time
sla_breach?: boolean;          // SLA breach indicator
escalated?: boolean;           // Escalation flag
escalation_level?: number;     // 1-3 escalation levels
escalated_at?: string;         // Escalation timestamp
escalated_by?: string;         // Who escalated the incident
related_problem_id?: string;   // Link to related problem record
```

#### 3. Automated Workflows
- **Incident Lifecycle Workflow**: Manages complete incident lifecycle from logging to closure
- **Escalation Workflow**: Automatic escalation based on SLA thresholds (70%, 90%, 110%)
- **Priority Calculation**: Automatic assignment of priority and SLA targets
- **Category Assignment**: AI-powered categorization based on keywords

#### 4. Database Schema Changes
```sql
-- Migration: 20250910120000_add_itil_fields_to_tickets.cjs
ALTER TABLE tickets ADD COLUMN itil_impact INTEGER CHECK (itil_impact >= 1 AND itil_impact <= 5);
ALTER TABLE tickets ADD COLUMN itil_urgency INTEGER CHECK (itil_urgency >= 1 AND itil_urgency <= 5);
ALTER TABLE tickets ADD COLUMN itil_category VARCHAR(100);
ALTER TABLE tickets ADD COLUMN itil_subcategory VARCHAR(100);
-- ... additional 9 ITIL fields
```

#### 5. Key Files Created/Modified
- `server/src/interfaces/ticket.interfaces.tsx` - Extended ticket interface
- `server/src/lib/utils/itilUtils.ts` - ITIL utility functions and priority matrix
- `server/src/lib/services/itilService.ts` - ITIL business logic service
- `server/src/lib/workflows/itilIncidentLifecycleWorkflow.ts` - Incident workflow
- `server/src/lib/workflows/itilEscalationWorkflow.ts` - Escalation workflow
- `server/src/components/tickets/ItilFields.tsx` - UI components
- `server/src/lib/api/itil.ts` - ITIL API endpoints

## Phase 2: Problem Management ✅ COMPLETED

### Objectives
- Implement ITIL Problem Management processes
- Create Known Error Database (KEDB)
- Enable incident-to-problem linking
- Automate problem detection and analysis

### Key Features Implemented

#### 1. Problem Record Model
Comprehensive `IProblem` interface with 30+ fields:
```typescript
interface IProblem {
  problem_id: string;
  problem_number: string;
  title: string;
  description: string;
  
  // Problem Classification
  problem_type: 'proactive' | 'reactive';
  category: string;
  subcategory?: string;
  priority: number;
  
  // Analysis and Resolution
  root_cause?: string;
  workaround?: string;
  permanent_solution?: string;
  
  // KEDB Integration
  known_error_id?: string;
  symptoms: string[];
  
  // Lifecycle Management
  status: string;
  created_date: Date;
  target_resolution_date?: Date;
  resolved_date?: Date;
  
  // Relationships
  related_incidents: string[];
  related_changes: string[];
}
```

#### 2. Known Error Database (KEDB)
- **Symptom Matching**: AI-powered matching of incidents to known errors
- **Solution Repository**: Searchable database of known solutions and workarounds
- **Auto-Detection**: Automatic creation of problem records from recurring incidents
- **Resolution Tracking**: Track permanent solutions and their effectiveness

#### 3. Problem Analysis Workflows
6-phase problem analysis process:
1. **Problem Detection**: Automatic detection from incident patterns
2. **Problem Logging**: Formal problem record creation
3. **Problem Categorization**: Classification and priority assignment
4. **Investigation**: Root cause analysis workflow
5. **Diagnosis**: Problem diagnosis and solution identification
6. **Resolution**: Known error creation and closure

#### 4. Database Schema
```sql
-- Migration: 20250910130000_create_problem_management_tables.cjs
CREATE TABLE problems (
  problem_id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  tenant UUID NOT NULL,
  problem_number VARCHAR(50) UNIQUE NOT NULL,
  title VARCHAR(255) NOT NULL,
  -- ... 25+ additional fields
);

CREATE TABLE known_errors (
  known_error_id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  problem_id UUID REFERENCES problems(problem_id),
  symptoms TEXT[],
  workaround TEXT,
  permanent_solution TEXT,
  -- ... additional fields
);

-- 3 additional tables: problem_statuses, problem_incidents, problem_analysis
```

#### 5. Key Files Created
- `server/src/interfaces/problem.interfaces.tsx` - Problem data models
- `server/src/lib/models/problem.ts` - Problem business logic
- `server/src/lib/services/knownErrorService.ts` - KEDB functionality
- `server/src/lib/services/problemIncidentService.ts` - Incident linking
- `server/src/lib/workflows/problemLifecycleWorkflow.ts` - Problem workflow
- `server/src/lib/workflows/problemAnalysisWorkflow.ts` - Analysis workflow

## Phase 3: Change Management ✅ COMPLETED

### Objectives
- Implement ITIL Change Management processes
- Create Change Advisory Board (CAB) workflows
- Build risk assessment and impact analysis
- Enable change scheduling and conflict detection
- Implement change lifecycle workflows
- Build comprehensive UI components
- Create approval workflows for different change types
- Implement conflict detection and resolution

### Key Features Implemented

#### 1. Change Request Model
Complete `IChangeRequest` interface supporting all ITIL change types:
```typescript
interface IChangeRequest {
  change_id: string;
  change_number: string;
  title: string;
  description: string;
  
  // Change Classification
  change_type: 'standard' | 'normal' | 'emergency';
  change_category: string;
  priority: number;
  
  // Risk Assessment
  risk_level: 'low' | 'medium' | 'high';
  business_impact: string;
  technical_impact: string;
  
  // Scheduling
  requested_date?: Date;
  scheduled_start_date?: Date;
  scheduled_end_date?: Date;
  estimated_duration?: number;
  
  // Approval Workflow
  approval_status: 'pending' | 'approved' | 'rejected' | 'emergency_approved';
  cab_required: boolean;
  emergency_justification?: string;
  
  // Implementation
  implementation_plan: string;
  rollback_plan: string;
  testing_plan?: string;
  
  // Relationships
  affected_services: string[];
  dependencies: string[];
  related_incidents: string[];
}
```

#### 2. Change Advisory Board (CAB) Workflows
- **CAB Meeting Automation**: Automated meeting scheduling and agenda generation
- **Voting System**: Electronic voting with weighted decisions
- **Emergency CAB**: Fast-track approval for emergency changes
- **Decision Tracking**: Complete audit trail of CAB decisions

#### 3. Risk Assessment Framework
Sophisticated risk assessment with 7 weighted factors:
```typescript
interface RiskFactor {
  name: string;
  weight: number;
  score: number; // 1-5
  justification: string;
}

// Risk Factors:
// - Technical Complexity (25%)
// - Business Impact (20%) 
// - Implementation Timeline (15%)
// - Resource Dependencies (15%)
// - Testing Coverage (10%)
// - Rollback Complexity (10%)
// - External Dependencies (5%)
```

#### 4. Change Calendar and Scheduling
- **Conflict Detection**: Automatic detection of resource and timing conflicts
- **Maintenance Windows**: Pre-defined maintenance windows for scheduling
- **Blackout Periods**: Change freeze periods (holidays, critical business periods)
- **Dependency Management**: Change prerequisite and successor tracking

#### 5. Database Schema
```sql
-- Migration: 20250910140000_create_change_management_tables.cjs
CREATE TABLE change_requests (
  change_id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  tenant UUID NOT NULL,
  change_number VARCHAR(50) UNIQUE NOT NULL,
  -- ... 35+ fields for complete change management
);

CREATE TABLE change_approvals (
  approval_id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
  change_id UUID REFERENCES change_requests(change_id),
  approver_id UUID NOT NULL,
  approval_type VARCHAR(50) NOT NULL,
  -- ... approval workflow fields
);

-- 4 additional tables: cab_meetings, change_conflicts, change_windows, change_dependencies
```

#### 6. Change Lifecycle Management
Complete workflow automation for change management:
- **Change Lifecycle Workflow**: Manages complete change from creation to closure
- **Standard Change Workflow**: Auto-approval for pre-approved standard changes  
- **Emergency Change Workflow**: Fast-track approval for critical emergency changes
- **CAB Approval Integration**: Seamless integration with CAB voting and decision processes

#### 7. UI Components and Forms
Professional user interface components:
- **ChangeRequestForm**: Comprehensive form with auto-risk assessment
- **ChangeCalendar**: Visual calendar with conflict detection and scheduling
- **CABApprovalPanel**: Interactive voting interface for CAB members
- **Conflict Resolution Interface**: Visual conflict management and resolution

#### 8. Conflict Detection and Resolution
Advanced conflict management system:
- **Multi-dimensional Conflict Detection**: Resource, timing, service, dependency, and capacity conflicts
- **Automated Resolution Proposals**: AI-suggested resolutions with impact assessment
- **Resolution Implementation**: Guided resolution implementation with approval workflows
- **Stakeholder Coordination**: Automated stakeholder notification and approval processes

#### 9. Key Files Created
- `server/src/interfaces/change.interfaces.tsx` - Change data models
- `server/src/lib/models/change.ts` - Change business logic
- `server/src/lib/services/changeRiskAssessmentService.ts` - Risk assessment engine
- `server/src/lib/services/changeCalendarService.ts` - Scheduling and calendar management
- `server/src/lib/services/changeConflictService.ts` - Conflict detection and resolution
- `server/src/lib/workflows/cabApprovalWorkflow.ts` - CAB workflow automation
- `server/src/lib/workflows/changeLifecycleWorkflow.ts` - Complete change lifecycle
- `server/src/lib/workflows/standardChangeApprovalWorkflow.ts` - Standard change auto-approval
- `server/src/lib/workflows/emergencyChangeApprovalWorkflow.ts` - Emergency change processing
- `server/src/components/change-management/ChangeRequestForm.tsx` - Change request form UI
- `server/src/components/change-management/ChangeCalendar.tsx` - Calendar visualization
- `server/src/components/change-management/CABApprovalPanel.tsx` - CAB voting interface

## Phase 4: Service Level Management (PLANNED)

### Objectives
- Implement comprehensive SLA management
- Create service catalogs and agreements
- Enable SLA monitoring and reporting
- Build customer satisfaction tracking

### Planned Features

#### 1. Service Catalog
- **Service Definitions**: Standardized IT service catalog
- **Service Level Agreements**: Configurable SLA templates
- **Service Dependencies**: Service dependency mapping
- **Service Ownership**: Clear ownership and responsibility models

#### 2. SLA Monitoring
- **Real-time Tracking**: Live SLA performance monitoring
- **Breach Prediction**: Predictive analytics for SLA breach prevention
- **Escalation Rules**: Automated escalation based on SLA thresholds
- **Reporting Dashboard**: Executive and operational SLA dashboards

#### 3. Customer Satisfaction
- **CSAT Surveys**: Automated customer satisfaction surveys
- **NPS Tracking**: Net Promoter Score tracking and trending
- **Feedback Integration**: Customer feedback integration with service improvement
- **Service Quality Metrics**: Comprehensive service quality measurement

## Phase 5: Configuration Management (PLANNED)

### Objectives
- Implement Configuration Management Database (CMDB)
- Track IT assets and their relationships
- Enable impact analysis for changes
- Support service dependency mapping

### Planned Features

#### 1. CMDB Implementation
- **Configuration Items (CIs)**: Comprehensive CI management
- **Relationship Mapping**: CI relationship tracking and visualization
- **Change Impact Analysis**: Automated impact analysis for changes
- **Asset Lifecycle**: Complete asset lifecycle management

#### 2. Discovery and Integration
- **Auto-Discovery**: Automated CI discovery and updates
- **Integration APIs**: Third-party tool integration
- **Data Synchronization**: Real-time CMDB data synchronization
- **Audit and Compliance**: Configuration audit and compliance tracking

## Implementation Benefits

### For IT Operations
- **Standardized Processes**: ITIL-compliant processes across all IT operations
- **Improved Efficiency**: Automated workflows reduce manual intervention
- **Better Visibility**: Comprehensive reporting and dashboards
- **Reduced Downtime**: Proactive problem management and change control

### For Business Users
- **Predictable Service Levels**: Clear SLA commitments and tracking
- **Faster Resolution**: Structured incident and problem management
- **Better Communication**: Standardized status updates and notifications
- **Service Transparency**: Visible service catalog and performance metrics

### For Management
- **ITIL Compliance**: Industry-standard IT service management
- **Cost Control**: Better resource allocation and cost tracking
- **Risk Management**: Structured change and risk management
- **Performance Metrics**: KPIs and metrics for IT service performance

## Technical Architecture

### Integration Points
- **Existing Ticket System**: Enhanced with ITIL fields and workflows
- **User Management**: Leverages existing user and role management
- **Notification System**: Extended for ITIL process notifications
- **Workflow Engine**: ITIL workflows built on existing workflow infrastructure
- **Database**: ITIL tables integrated with existing schema
- **API Layer**: ITIL endpoints extend existing API structure

### Data Flow
```
Incident Creation → ITIL Priority Calculation → SLA Assignment → Escalation Monitoring
     ↓
Problem Detection → KEDB Matching → Root Cause Analysis → Known Error Creation
     ↓
Change Request → Risk Assessment → CAB Approval → Scheduling → Implementation
```

### Multi-Tenant Support
- **Tenant Isolation**: All ITIL data properly isolated by tenant
- **Configurable Workflows**: ITIL processes configurable per tenant
- **Custom Categories**: Tenant-specific incident/problem/change categories
- **SLA Customization**: Per-tenant SLA definitions and thresholds

## Migration Strategy

### Phase 1: Foundation (Completed)
1. ✅ Extended ticket model with ITIL fields
2. ✅ Implemented priority calculation and SLA management
3. ✅ Created incident lifecycle workflows
4. ✅ Built escalation automation

### Phase 2: Problem Management (Completed)
1. ✅ Created problem management data model
2. ✅ Implemented KEDB functionality
3. ✅ Built problem analysis workflows
4. ✅ Enabled incident-problem linking

### Phase 3: Change Management (Completed)
1. ✅ Implemented change request model
2. ✅ Built CAB approval workflows
3. ✅ Created risk assessment framework
4. ✅ Implemented change calendar and scheduling

### Phase 4: Service Level Management (Next)
1. 🔄 Service catalog implementation
2. 🔄 SLA monitoring and reporting
3. 🔄 Customer satisfaction tracking
4. 🔄 Service quality metrics

### Phase 5: Configuration Management (Future)
1. 📋 CMDB implementation
2. 📋 Asset discovery and management
3. 📋 Relationship mapping
4. 📋 Impact analysis automation

## Success Metrics

### Operational Metrics
- **Incident Resolution Time**: Average time to resolve incidents
- **First Call Resolution Rate**: Percentage of incidents resolved on first contact
- **SLA Compliance**: Percentage of incidents meeting SLA targets
- **Escalation Rate**: Percentage of incidents requiring escalation
- **Problem Resolution Time**: Average time to resolve problems
- **Change Success Rate**: Percentage of changes implemented successfully
- **Change Rollback Rate**: Percentage of changes requiring rollback

### Business Metrics
- **Customer Satisfaction (CSAT)**: Customer satisfaction scores
- **Net Promoter Score (NPS)**: Customer loyalty and advocacy
- **Service Availability**: Percentage uptime for critical services
- **Business Impact**: Reduced business disruption from IT issues
- **Cost per Incident**: Total cost of incident management
- **Change Velocity**: Rate of successful change implementation

## Conclusion

The ITIL integration into Alga PSA provides a comprehensive IT Service Management solution that:

- **Maintains Compatibility**: Preserves existing PSA functionality while adding ITIL capabilities
- **Ensures Compliance**: Implements industry-standard ITIL v4 processes
- **Improves Efficiency**: Automates manual processes and reduces response times
- **Enhances Visibility**: Provides comprehensive reporting and metrics
- **Supports Growth**: Scalable architecture supporting multi-tenant deployments

The phased approach allows for gradual adoption and minimal disruption to existing operations while building towards a complete ITSM solution.

---

*Document Version: 1.0*  
*Last Updated: September 10, 2025*  
*Status: Phases 1-3 Complete, Phases 4-5 Planned*