NEW YORK (AP) — When the world shifted from personal computers to smartphones, websites had to slim down to work on smaller screens and slower wireless connections. A similar shift to voice-centric services is again forcing businesses to rethink how they present information to consumers — and spurring new efforts to help them do so.

The software company Adobe, for instance, announced on Tuesday a new suite of tools that could help airlines, retailers and other companies create simple voice interfaces for travel and shopping. It's not a simple task, since a voice-based digital assistant can't r...