New Delhi, Oct. 5 -- Zoho co-founder and Chief Scientist Sridhar Vembu has shed light on the technological depth powering Arattai, the company's homegrown messaging and calling app, emphasising the years of R&D and engineering frameworks that form its foundation.

In a post on X on 5 October 2025, Vembu described Arattai as a product that appears simple on the surface but is "built on a vast amount of deep engineering." He outlined several proprietary frameworks developed in-house by Zoho that underpin the app's performance, scalability and security.

According to Vembu, Arattai's real-time communication capabilities are driven by Zoho's custom-built messaging and audio-visual (AV) framework - a system that has been refined over 15 years ...