I have an idea for more prominent companies with IT teams, a platform where developers can quickly improve their skills.
Every day there will be 5 min video about some topic and one coding task which should be solved based on a provided video, there will be also a gamification aspect (check how many ppl solved the task from your company)
Devs would have access later on to full test cases.
IMO it could work because of
I want to start only with Java challenges as I am a Java Developer.