AT&T is a provider of telecommunications and digital entertainment services for consumers and businesses.
Twilio is a cloud communication company that enables users to use standard web languages to build voice, VoIP and SMS apps via a web API.
Twitter is a global social networking platform.
SendGrid is a cloud-based customer communication platform that drives engagement and business growth.
Verizon Communications is a broadband and telecommunications company operating 4G LTE network, 3G network, and information services.
T-Mobile is a global mobile telephone operator.
Spectrum Enterprise provides cable services to residential and commercial customers in the United States.
Rogers is a diversified Canadian communications and media company engaged in wireless voice and data communications services.
Juniper Networks designs, develops and sells networking products and services.
Motorola Solutions is a data communications and telecommunications equipment provider.
Polycom is a multinational corporation that develops video, voice and content collaboration and communication technology.
F5 Networks develops, markets, and sells application delivery networking products.