1. Open Source Is Growing More and More Popular The 2019 IDC North America Open Source Software Usage Survey showed that 71% of enterprises are using open source software, and 54% plan to expand their usage. The 2020 Red Hat Enterprise Open Source Survey showed that 95% of IT leaders consider enterprise open source critical to their enterprise infrastructure software strategy.

1. Little Money, Lots of Work, and Everyone Pushes You Around The operations department is a cost center. There is a phrase for it: cost optimization. When a CXO sees how low machine utilization is, they think about cutting machines — spend as little as possible — and that means more work for operations.

1. What Problem S2I Solves It is foreseeable that a large number of applications will be deployed as containers in the future. Container platforms care about images and containers, while application development cares about business code, and ultimately the code needs to be deployed as an image. From code to image — that is Source To Image, or S2I.

I have been learning Go recently, and the internal PaaS platform we commonly use happens to support Go as well as related Web frameworks. A PaaS system that supports multiple languages cannot do without the buildpack mechanism. Although PaaS platforms keep being upgraded, the buildpack mechanism has always been retained.