Improving your omnichannel customer experience – personalised problem solving
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...
Access Control For Exotel APIs

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…

Changing the way elderly access technology: Hack Street Boys using Exotel APIs

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…

Ensuring high availability as you scale

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,…

How we achieved MySQL High Availability using ProxySQL

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…

Auto Scaling on AWS

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} 5 cool usecases you can implement using Exotel & Google Sheets (with steps)

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…

Converting audio WAV format to HTK format on Ubuntu 14.04

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…

Frequencies

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…

The Managed Vs. Self hosted dilemma – should you stay on AWS?

At Exotel, our platform is hosted on AWS. We have scaled exponentially over the last few years. What was a month worth of transactions a few years back now happens in a single day! What we use at Exotel At Exotel, we use a variety…

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