DevRel is a marketing technic that major companies have tried it such as Amazon, Google, Facebook, Evernote, GitHub, etc. They have made relationship with external engineers. Because companies want engineers to acknowledge their services, and they want to get the engineer's feedbacks.
Lately in Japan, workers who is known evangelist or developer advocate have increased, too. DevRel Meetup in Tokyo is a community that collect evangelist or advocate, and share the knowledge, communicate each other. We aim to Improve awareness of DevRel, evangelist and advocates!