My portion of a joint presentation at DST's ADVANCE conference in 2016, covering flexible application development with services and widgets

1. 1
ACHIEVING FLEXIBLE
DEVELOPMENT WITH SERVICES
AND WIDGETS

2. 2
Industry trends in service-based architecture
Leveraging a modern services architecture
Business benefits
AGENDA

3. 3
ARCHITECTURE TRENDS:
IN THE BEGINNING
Monolithic Applications
• Single deployment
• Tightly-coupled UI
• Any change requires complete
redeployment
Data
Business Logic
User Interface

4. 4
ARCHITECTURE TRENDS:
OLD-SCHOOL SOA
Monolith + Services
• Service layer on monolithic app
• Service = function point
• UI assembled from services
• Changes isolated via service
interface
• Some business logic may be
embedded in ESB
Data
Business Logic
Services
UI UI UI

5. 5
ARCHITECTURE TRENDS:
INDEPENDENT DEPLOYMENT
Microservice Stacks
Data
Logic
Svcs
UI UI
Svcs Svcs
Logic Logic
Data Data
• Decentralized, independently-
deployable services
• Service = business capability

6. 6
ARCHITECTURE TRENDS:
LOW-CODE UI
Widgets
Data
Logic
Svcs
Widget
Svcs Svcs
Logic Logic
Data Data
• Widget UI bundled into services
• Portal UI assembled from widgets
Portal
Widget Widget

7. 7
Assemble services into applications
• Reuse services/business capabilities
• Consistent business logic
• Faster time to market
• Leverage model-driven development tools
• Less developer experience required
SERVICE ARCHITECTURE
TECHNOLOGY BENEFITS

8. 8
Widgets improve user interface
• Widget UI created by UI design specialists
• Consistent user interface across applications
• Developers focus on functionality
SERVICE ARCHITECTURE
TECHNOLOGY BENEFITS

9. 9
Built for change
• Add a new capability by plugging in a new service
• Microservice stacks developed, deployed and scaled
independently
• Leverage internal and external services
SERVICE ARCHITECTURE
TECHNOLOGY BENEFITS

10. 10
Faster time to market
• Less development and testing time
Easier scalability
• Services can be scaled independently
Improved user experience
• Standardized widgets across all applications
SERVICE ARCHITECTURE
BUSINESS BENEFITS