are literally active in everywhere! For example, they are extremely good at their fields of work. They are equally active on Social Media such as Twitter or, Fa

are literally active in everywhere! For example, they are extremely good at their fields of work. They are equally active on Social Media such as Twitter or, Facebook etc. Also, maintain blogs with quality contents. Most of them posts valuable answers to Stack overflow, Quora etc. They also Attend conferences/ meetup with slides full of gems Answer: they don't. What you are seeing is the "technology evangelist", a sort of guerrilla marketing thing where people pretend to be an ordinary developer just like you who just loves the products of company X - and is supported in producing all this content by the marketing team back at the company. Don't be fooled, they are selling snake oil.