Rewriting Critical Software in Elixir - A Case Study

Most companies adopting Elixir start small, with a proof of concept or a rewrite of a non-critical service. At Telnyx, they chose the hard route: rewriting a high-volume, highly available and economically-critical service.

Renan explores their strategy, what went well, what didn't, and what they wished they knew at the beginning — encouraging developers to adopt Elixir at established companies while providing an impartial engineering perspective grounded in real-world experience.