(This article originally appeared as a part of a 3 part series here.) At Exotel, we have a lot of customers running their support and sales call centers on us. When these agents receive calls, having a real-time notification, with contextual information about the details …

Brands are now concentrating on creating an omnichannel customer experience. Simply put, a customer should be able to get in touch with a brand across multiple touch points like email, calls, social media, chat, etc. and still have a consistent brand experience. At times, brands …

At Exotel, we put the customer at the center of everything that we do. We take the privacy and security of your data very seriously and take substantial efforts to protect your data. Our platform is designed to make security an integral part of our …

We at Exotel are huge fans of hackathons. We don’t just love taking part in them, but also like hosting them to encourage people to use our APIs anywhere they find suitable. It’s like giving wings to innovation by offering our technology and giving them …

Building scalable technology has never been a problem. Companies do it all the time and frankly, they do it quite well. Being highly available while scaling – that’s an area of concern we’ve seen quite often.  Having been the CTO of Exotel since its inception, …

ProxySQL is an open source MySQL load balancer and proxy solution which can run on almost any Linux distributions. It can be used to improve performance and availability of MySQL server. In this post, we’ll discuss a general overview of what ProxySQL is and examples …

This post talks about the approach we took to build an Auto Scaling infrastructure on AWS. In the process, we used Terraform, Ansible and Jenkins to create a build pipeline and deployment framework. Our hope is that people can use some of our learnings and re-use some of the code we wrote, to minimize the time and effort required to set up an auto-scaling infrastructure on Amazon AWS.

Updated: April 2018 In February 2016, we partnered with Pratham Books to bring the pure joy of a bedtime story to kids in some of the unprivileged parts of Delhi. What if we could just get these kids to give a missed call and get …

At Exotel Labs we analyze tons of anonymized voice samples for addressing varied research problem in the voice space. While there are multiple techniques to this, a proven methodology to do voice analysis begins with converting audio into Hidden Markov Models (HMM). HTK is the …

I would like to continue the blog series I started earlier – Introducing Digital Audio – with this story about frequencies and elucidating what they mean. Frequency is a word that one frequently encounters when they read any book or research paper related to digital …