Where & Why did We Lost SDN ?

 

In theory, the core objectives of Software Defined Networking (SDN) & Intent Based Networking (IBN) should have been (As an Integrated Package):

1. Introduce System Thinking

2. Simplified Life Cycle Mgmt.

3. Introduce New Abstraction Layers to Help Businesses People Have a Realtime/Historical View of Business Performance Metrics & Insights

4. Seamless Integration between Technology Metrics & Businesses Metrics to Fill the Gap between The Two

5. Reduced Complexity & Running Cost

6. Flexible Consumption Models

7. Embedded Security

8. Flexibility to Build Innovative Solutions on Top of Given Platform that Meets My Specific Environmental Needs

9. Gel Well with Existing & Legacy Environment and Tools

10. Allow Me to Run Dry Runs, Simulations and Offer Me Insights & Recommendation to Keep Improving + Troubleshooting

11. Reduce my Risk Profile (Technically & Financially)

But...What We Ended Up with:

0. Fancy GUIs Built Around Object Oriented Programmability Principles, You Just Need 10 Clicks to Create VLAN & Map it to a Port 😇

1. Separation of Control Plane & Data Plane

2. Network Virtualization

3. Network Function Virtualization & White Boxes

4. Human Driven Programmability & Automation

5. Controllers

6. Tons of Overlay Protocols

7. Proprietary Solutions

HTH...

A Network Artist 🎨