davidj.substack

Bad Character

Guardrails

Nov 10 • 

David Jayatillake

1

October 2025

Atlas

The master key to the internet

Oct 26 • 

David Jayatillake

5

2

Legit Rumour

The final conclusion of the MDS era

Oct 13 • 

David Jayatillake

3

5

September 2025

Open Semantic Interchange

Not too little, not too late

Sep 28 • 

David Jayatillake

8

5

SQLMashed

What does this mean for data folks

Sep 19 • 

David Jayatillake

7

2

Calling Berlin

The Invisible Semantic Layer

Sep 6 • 

David Jayatillake

4

August 2025

Get on your soapbox

What is public now?

Aug 12 • 

David Jayatillake

July 2025

Thank You, Goodbye and Good Luck!

So long, and thanks for all the fish - a personal update

Jul 31 • 

David Jayatillake

13

2

Junior Extinction

At the speed of iteration

Jul 29 • 

David Jayatillake

6

Gloves off, knives out

Anthropic cuts Windsurf off... and then lets them back in?

Jul 23 • 

David Jayatillake

1

AI-Shoring

The end of off-shoring

Jul 10 • 

David Jayatillake

2

Agents

Software will eat the world, but agents will eat software

Jul 1 • 

David Jayatillake

6