Lara Garg

Building on the ServiceNow Platform: A Developer's Perspective

1/5/2024
10 min read
ServiceNow
Development
Enterprise

Building on the ServiceNow Platform: A Developer's Perspective


ServiceNow has evolved from a simple IT service management tool to a comprehensive platform for digital workflows. As a developer working on this platform, I've gained insights into what makes ServiceNow unique and powerful for enterprise solutions.


Platform Overview


What Makes ServiceNow Different

Unlike traditional development environments, ServiceNow provides:

  • Configuration over customization
  • Built-in workflow engine
  • Integrated database and UI framework
  • Extensive out-of-the-box functionality

    • Development Approach


    Configuration First

    The platform encourages solving problems through configuration before writing custom code. This approach:

  • Reduces maintenance overhead
  • Ensures upgrade compatibility
  • Leverages platform capabilities
  • Speeds up development

    • When to Code

    Custom development is needed for:

  • Complex business logic
  • Third-party integrations
  • Advanced UI requirements
  • Performance optimization

    • Key Technologies


    Server-Side Development

  • **Business Rules**: Server-side JavaScript for data validation and manipulation
  • **Script Includes**: Reusable server-side functions
  • **Scheduled Jobs**: Automated background processing
  • **REST APIs**: Integration endpoints

    • Client-Side Development

  • **Client Scripts**: Form behavior and validation
  • **UI Pages**: Custom interfaces
  • **Service Portal**: Modern web experience
  • **Mobile Apps**: Native mobile development

    • Best Practices


    Code Quality

    1. Follow ServiceNow coding standards

    2. Use proper error handling

    3. Implement logging for debugging

    4. Write reusable, modular code


    Performance Considerations

  • Minimize database queries
  • Use GlideRecord efficiently
  • Implement proper indexing
  • Consider async processing for heavy operations

    • Security

  • Validate all inputs
  • Use proper access controls
  • Implement secure coding practices
  • Regular security reviews

    • Integration Patterns


    REST APIs

    ServiceNow's REST API capabilities enable:

  • Third-party system integration
  • Mobile app connectivity
  • Webhook implementations
  • Microservices architecture

    • MID Server

    For secure on-premise integrations:

  • Database connections
  • File transfers
  • Network discovery
  • Legacy system integration

    • Workflow Automation


    Flow Designer

    Visual workflow builder for:

  • Approval processes
  • Data synchronization
  • Automated notifications
  • Complex business processes

    • Challenges and Solutions


    Common Pitfalls

    1. Over-customization instead of configuration

    2. Poor performance due to inefficient queries

    3. Upgrade issues from unsupported customizations

    4. Inadequate testing procedures


    Solutions

  • Embrace platform capabilities
  • Regular performance monitoring
  • Follow upgrade best practices
  • Implement comprehensive testing

    • Future Outlook


    ServiceNow continues to evolve with:

  • AI and machine learning capabilities
  • Enhanced mobile experiences
  • Improved developer tools
  • Expanded integration options

    • The platform's strength lies in its ability to rapidly deliver enterprise-grade solutions while maintaining flexibility for custom requirements. For developers, it offers a unique opportunity to work at the intersection of configuration and code, delivering business value quickly and efficiently.