CPaas and What are they?

CPaaS is changing the way we do business by making it quick and easy to develop services and then scale them quickly. In this blog post, we are going to define what characteristics define CPaaS and make a comparison between its providers and platforms which are offering top-notch communication services overcloud.

What is CPaaS?

A CPaaS (Communication Platform as a Service) is a cloud-based platform that allows organizations to add real-time communication features like voice, video, and messaging in their applications by deploying application program interfaces (APIs) without needing to build backend infrastructure and interfaces.

CPaaS offers a ready-to-use development environment in which anyone can create custom communication applications.
CPaaS is scalable and is provider-held and cloud-based so your business will save time and money on infrastructure to enable this feature.

​Features For Evaluating CPaaS Platforms

CPaaS features

Top 5 CPaaS providers

The services they are offering range from simple use cases such as voice/text messaging to more complex applications that require call routing, streaming, and multi-party communication facilities.


Twilio is by far the most comprehensive CPaaS service provider available in the world. Founded in 2008, Twilio has built a very robust product portfolio of communication services starting from voice, SMS, and video. Over the years they have added more services and features to their core CPaaS offerings. As a result, now you can use Twilio services to initiate email communication as well as IoT based data exchange.

Twilio Flex is a powerful contact center suite for voice, video and messaging-based collaboration. It is fully programmable and has inbuilt customization for designing your own interaction flows with customers. 

Supported programming language: C#, Java, Node.js, PHP, Python, Ruby. It also has iOS and Android SDKs.


Nexmo offers voice, video, SMS and messaging API for a unified communication experience. Nexmo also has SIP trunking solutions for customized call routing and PBX/ACD compatible services. Nexmo also provides virtual phone numbers and has a shortcode feature for provisioning short, campaign-specific numbers for better branding.

Supported Programming Languages: Ruby, PHP, Python, .NET, Node.js, JAVA, iOS, Android SDK and a Javascript SDK for the browser.


Plivo currently supports SMS and Voice APIs. If you are only looking for enhanced voice and SMS based features then Plivo is a good choice. Plivo also provides virtual phone numbers of various types and offers SIP trunking solution for deploying call center ​infrastructure. 

PHLO is Plivo’s drag and drops interaction editor which lets you design your voice and SMS interaction flow as per your business requirement. It is ideal for building specific communication workflows such as SMS surveys and IVR.

Supported Programming Languages: PHP, Node.js, Ruby, Java, .NET, Python, GoC#, Java, Node.js, PHP, Python, Ruby.  For building client applications it has browser SDK as well as iOS and Android SDK.


Exotel is also a CPaaS service focused on Voice and SMS. Together with virtual phone numbers, it offers all the standard services such as on-call handling, call recording, SMS and call campaigns and some interesting ones, such as missed call service.

Exotel also supports building custom workflows around voice and SMS conversations. Known as Applet, it is a web-based interface for adding interactive features to a conversation, such as greeting messages, password enforcement, additional data gathering through the number pad.

Supported Programming Languages: Exotel only has REST APIs. The official developer portal does not list any SDKs.


Xoxzo is a no-frills voice and SMS centric CPaaS service. Xoxzo is an excellent choice for essential voice call handling with outbound calls, dial-in call handling and a utility API for looking up carrier information. Even with its simple set of services, Xoxzo still offers conference calls which is a great feature to have for anyone starting with a CPaaS provider.

​Supported Programming Languages: Ruby, PHP, Python, .NET, Node.js, JAVA along with iOS and Android SDK and a Javascript SDK for the browser.

Comment (1)

  1. prateek mishra
    March 28, 2020

    Nice information shared about Communication Platform as a Service. Helpful article posted. Keep Posting…!

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