docker.comvsheroku.com

Docker and Heroku are nearly tied on overall homepage messaging — 76 vs 76. The difference comes down to where each invests its messaging effort.

Heroku is clearer about what it does (87 vs 62 on clarity). Heroku's hero ("The AI PaaS For Deploying, Managing, and Scaling Apps") names something concrete, while Docker's ("A safer container ecosystem, for everyone") stays abstract. Heroku has stronger CTAs (75 vs 60). Docker triggers decision paralysis with 19 competing CTAs, while Heroku keeps it focused at 8. Heroku is better at saying who it's for (ICP: 90 vs 46). Heroku's targeting is crystal-clear, while Docker's is decent.

Docker uses a "Community / Movement" positioning while Heroku goes with "Platform / Ecosystem" — fundamentally different approaches to winning the same buyer.