The changes made to the billboard are actually a reflection of the internal changes that are ongoing inside Twilio. Before, the company was laser-focused on helping developers become the heroes of their companies by equipping them with best-in-class APIs to solve their communication problems. Now, the goals have shifted and the vision is not as clear as it used to be, so much that the new billboard needs an explanatory blog post.

Source: Goodbye, Twilio - miguelgrinberg.com