Plus, a lot of talk about Java and Spring in large organizations.

October, 2010, probably at an airport.

I’m always trying to find how many apps are written (and, of course, running) in Java. Here are recent numbers I have on hand: “[N]early 70% of respondents say that more than half of their applications are built with Java or run on a JVM.” Azul survey, 2025. “98% of companies we surveyed use Java, with 57% saying it is the backbone of most of their application and infrastructure estate.

Here are some thoughts after a week of using Claude Skills. JasonJ in the SDT Slack says: I’d tl;dr Claude CLI skills as “low/no/english code MCPs'”. Seems helpful in the way that local utility scripts are today. That is a good way of putting it. I haven’t done heavy experimenting, but I think there’s a distinction between: (1) The Skill has no code, except maybe code fragments. Most of it is just a SKILL.

From my Cloud Foundry Day EU talk. See the slides if you want to zoom in and click on the citations. My friends at Rabobank corrected a figure: they support 300 developer teams, not just developers.

Next week in Frankfurt, October 7th, 2025: Cloud Foundry Day. I’m speaking in my ongoing attempts to help out the CF community with…marketing! Here is the agenda:

The talk discusses how platform engineers can navigate AI support, emphasizing the need for middleware, customer engagement, and rapid experimentation.

Recent discussions on enterprise AI reveal that while individual workers may benefit from productivity gains, the overall ROI for companies remains unclear and challenging to measure.

This a good, correct framing of the AI project failure stuff. No one really knows what will work and what they’re doing yet. As we learned in the digital transformation craze of the 2010’s, this means failure == learning. And learning is what you need to do a lot of. More so, this kind of rapid learning, innovation, and sense making is exactly what a platform like Tanzu Platform with Cloud Foundry is excels at, and has a long, proven history of supporting.