A group of prominent developers published an open-letter on Tuesday , outlining their deep concerns about Accelerated Mobile Pages, a project by Google that aims to improve user experience of the Web. Google services already dominate the Web, and the scale at which AMP is growing, it could further reinforce Google's dominance of the Web, developers wrote. The letter acknowledges that web pages could be slow at times, but the solutions out there to address them -- AMP, Facebook's Instant Articles, Apple News -- are creating problems of their own, developers say. From the letter: