RingCentral

RingCentral is a United States-based provider of cloud communications and collaboration software. Its platform combines business telephony, team messaging, video meetings, SMS, fax, contact center functionality, application integrations, and artificial-intelligence tools in a software-as-a-service model. The company primarily serves businesses seeking to replace or modernize premise-based private branch exchange systems and fragmented communications applications. The company was founded in 1999 by Vlad Shmunis and Vlad Vendrow. It initially operated under the RingZero name and focused on communications services for small businesses using Microsoft Windows. RingCentral later developed a broader hosted business-phone offering and attracted venture financing from investors including Sequoia Capital, Khosla Ventures, Scale Venture Partners, DAG Ventures, Cisco, and Silicon Valley Bank. By 2011, the business had reportedly secured approximately $45 million in investment capital. It completed its initial public offering on the New York Stock Exchange in September 2013 and conducted a follow-on offering in March 2014. RingCentral expanded beyond hosted voice through product development, partnerships, and acquisitions. The 2015 acquisition of Glip added persistent team collaboration, document sharing, tasks, and event-management capabilities. Acquisitions of Dimelo and Connect First broadened the company’s omnichannel and customer-engagement capabilities, while DeepAffects and Kindite contributed speech-intelligence and encryption technology. The company also developed strategic distribution relationships with Avaya, Mitel, Vodafone, Amazon Web Services, Microsoft, and other technology providers. In 2018, RingCentral became a founding partner of San Francisco’s Chase Center and the exclusive cloud communications provider of the Golden State Warriors. The company’s product portfolio has been organized around unified communications as a service, contact center as a service, and intelligent interaction-management tools. RingEX provides the core unified communications environment, including cloud telephony, messaging, meetings, SMS, fax, routing, call controls, and integrations. RingCX extends the platform into customer service and contact center operations. RingCentral’s AI products use speech recognition, natural-language processing, generative AI, and conversation analytics to assist agents, summarize interactions, identify trends, and automate routine call handling. Its AI Receptionist product is designed to answer inbound calls, understand caller intent, route requests, send confirmations, and provide transcripts and analytics. RingCentral has also pursued embedded and channel-based distribution. RingCentral for Microsoft Teams integrates cloud PBX, dialing, SMS, and fax capabilities into Microsoft’s collaboration interface. Vodafone Business UC combines RingCentral’s messaging and video capabilities with Vodafone’s fixed and mobile voice services in selected European markets. In 2023, the company announced broader availability of its unified communications and contact center capabilities through AWS and stated that it had become the first global cloud provider to offer fully compliant cloud phone-system services in India. Vlad Shmunis has served both as founder and chief executive, with Tarek Robbiati taking the CEO position in 2023 before Shmunis returned to the role in 2024.

RingCentral was established in 1999 by Vlad Shmunis and Vlad Vendrow. Its early identity was RingZero, and its initial focus was on delivering communications tools for small businesses operating on Microsoft Windows. The company subsequently developed a hosted business-phone model intended to provide enterprise-style calling features without requiring customers to purchase and maintain traditional premise-based PBX equipment. RingCentral raised its first venture capital round in 2006. By 2011, reported investment in the company had reached approximately $45 million, with Cisco and Silicon Valley Bank among the investors mentioned in company histories. The business went public on the New York Stock Exchange in September 2013. A follow-on offering in March 2014 raised a further $39.8 million, providing additional capital for product development and expansion. The company broadened its communications proposition through acquisitions and strategic partnerships. In 2015, RingCentral acquired Glip, a persistent workstream collaboration service whose messaging, file-sharing, task, and event features were incorporated into RingCentral’s wider platform. In 2018, it acquired Dimelo, a Paris-based provider of omnichannel contact center technology. Connect First, acquired in 2019, added outbound and blended customer-engagement capabilities. DeepAffects, acquired in 2020, contributed speech-recognition and intelligence technology, while Kindite, acquired in 2021, added encryption expertise. RingCentral also acquired Hopin’s audience-engagement technology business in 2023 to strengthen its video and event-related capabilities. Partnerships became another important route to market. In 2018, RingCentral became a founding partner of Chase Center and the Golden State Warriors’ exclusive cloud communications provider. In 2020, it worked with Avaya to introduce Avaya Cloud Office. In 2021, RingCentral and Mitel formed an exclusive UCaaS partnership, allowing Mitel users to access RingCentral’s cloud platform. The company also developed integrations with Microsoft Teams and other business applications, helping customers use RingCentral telephony and contact center functions inside existing productivity environments. The COVID-19 period accelerated demand for remote communications and coincided with the launch of RingCentral Video in April 2020 and the integrated RingCentral MVP application in May of that year. These products combined meetings with messaging and business telephony. RingCentral continued adding AI and analytics capabilities, including the RingSense platform announced in 2023 and later described as AI Conversation Expert. The company also expanded distribution through AWS and established Vodafone Business UC deployments in Italy and Portugal. RingCentral announced in 2023 that it had become the first global cloud provider to offer fully compliant cloud phone-system services in India. Tarek Robbiati became CEO in August 2023, and founder Vlad Shmunis returned to the position in 2024. More recent product development has emphasized artificial intelligence, including RingCX contact center capabilities, RingCX integration with Salesforce Service Cloud Voice, and AI Receptionist, a voice-first system for automated call answering, intent recognition, routing, messaging, transcription, and analytics. RingCentral’s current strategy therefore combines its established unified communications base with contact center, embedded integrations, global channel partnerships, and AI-assisted customer and employee workflows.

• 2025

  AI Receptionist launch

  [2]RingCentral official websiteringcentral.com

  RingCentral launched AI Receptionist for automated inbound call handling and routing.

• 2024

  Founder returns as CEO

  [1]RingCentralen.wikipedia.org

  Vlad Shmunis returned to the chief executive role.

• 2023

  AI and global distribution expansion

  [1]RingCentralen.wikipedia.org

  The company expanded through AWS, Vodafone partnerships, RingSense, Microsoft Teams 2.0 integration, and compliant cloud phone services in India.

• 2021

  Mitel UCaaS partnership

  [1]RingCentralen.wikipedia.org

  RingCentral entered an exclusive unified communications partnership with Mitel.

• 2020

  Video and MVP expansion

  [1]RingCentralen.wikipedia.org

  RingCentral launched RingCentral Video and then introduced the integrated MVP application.

• 2018

  Chase Center and Warriors partnership

  [1]RingCentralen.wikipedia.org

  RingCentral became a Chase Center founding partner and the Golden State Warriors’ exclusive cloud communications provider.

• 2015

  Acquisition of Glip

  [1]RingCentralen.wikipedia.org

  The acquisition added persistent team collaboration, file sharing, task management, and event features.

• 2013

  Initial public offering

  [1]RingCentralen.wikipedia.org

  RingCentral completed its IPO on the New York Stock Exchange.

• 2006

  First reported venture financing

  [1]RingCentralen.wikipedia.org

  RingCentral received its first reported round of venture capital investment.

• 1999

  Company founded

  [1]RingCentralen.wikipedia.org

  Vlad Shmunis and Vlad Vendrow founded the business, initially operating as RingZero and targeting small-business communications.

An enterprise cloud communications platform that unifies voice, video, messaging, contact center, integrations, and AI-assisted workflows.

• Unified communications

  RingEX

  RingEX is RingCentral’s core unified communications platform. It combines cloud business telephony, extensions, call controls, team messaging, video meetings, SMS, fax, routing, call logs, auto-receptionist functions, and integrations with applications such as Microsoft Teams, Salesforce, Microsoft Outlook, Google, Dropbox, and Box. AI capabilities are incorporated into the platform to support productivity and communication workflows.

• Video conferencing · 2020

  RingCentral Video

  RingCentral Video is the company’s video-meeting and online collaboration product. Introduced in 2020, it helped complete RingCentral’s broader communications proposition by adding video conferencing to voice, messaging, and related workplace tools.

• Contact center · 2023

  RingCX

  RingCX is RingCentral’s cloud contact center offering. It connects customer-service and engagement workflows with the company’s voice, messaging, video, SMS, and fax capabilities. The product is positioned around AI-assisted customer interactions, agent productivity, analytics, routing, and integration with business applications.

• Conversation intelligence · 2023

  AI Conversation Expert

  AI Conversation Expert, formerly associated with the RingSense name, uses speech and natural-language processing to analyze communications. It is designed to extract business insights from conversations, organize interaction data, identify customer and operational trends, and provide dashboards that support management and workflow improvement.

• Artificial-intelligence voice agent · 2025

  AI Receptionist

  AI Receptionist is a generative-AI voice agent launched in 2025. It can answer inbound calls, interpret caller intent, triage inquiries, route conversations, send SMS confirmations, and provide transcripts and analytics. The product is intended to automate or augment front-desk and first-line call-handling activities.

• Embedded communications integration · 2023

  RingCentral for Microsoft Teams

  RingCentral for Microsoft Teams embeds RingCentral communications capabilities into the Microsoft Teams environment. The integration provides access to cloud PBX functions, softphone dialing, SMS, fax, and related business communications features while allowing organizations to retain Teams as a primary collaboration interface.

• 2023Vodafone Business UC rollout

  Italy · Portugal

  RingCentral and Vodafone combined RingCentral’s messaging and video tools with Vodafone’s fixed and mobile voice services for business customers.

  Outcome. Joint unified communications services were rolled out in Italy and Portugal.

  Source
• 2020Remote collaboration product expansion

  Global

  The launch of RingCentral Video and MVP positioned the company as a broader remote-work and distributed-collaboration provider rather than only a hosted telephony vendor.

  Outcome. The product portfolio expanded to include integrated voice, messaging, and video communications.

  Source
• 2018Chase Center and Golden State Warriors partnership

  United States

  RingCentral used a high-profile sports and venue partnership to associate its cloud communications brand with Chase Center and the Golden State Warriors.

  Outcome. RingCentral became a Chase Center founding partner and the Warriors’ exclusive cloud communications provider.

  Source

• 2023

  Prioritize AI and cloud ecosystem distributionStrategy

  Background

  RingCentral sought to differentiate its mature communications platform through artificial intelligence, contact center functionality, and ecosystem partnerships.

  Action taken

  The company introduced RingSense, expanded availability through AWS, deepened Vodafone and Microsoft Teams integrations, and developed RingCX.

  Aftermath

  The product strategy shifted toward an integrated communications and customer-engagement platform with embedded AI.

  Source

• 2021

  Enter exclusive Mitel UCaaS partnershipStrategy

  Background

  RingCentral pursued indirect distribution and access to established enterprise telephony customers.

  Action taken

  The company granted Mitel users access to its cloud communications platform through an exclusive UCaaS partnership.

  Aftermath

  The arrangement expanded RingCentral’s potential channel and migration opportunities among Mitel customers.

  Source

• 2020

  Launch integrated video and MVP productsProduct launch

  Background

  Demand for remote communication increased, while RingCentral aimed to compete across voice, messaging, and video rather than in telephony alone.

  Action taken

  RingCentral launched RingCentral Video and then introduced the integrated Message Video Phone application.

  Aftermath

  The company presented a more complete cloud communications suite for distributed workforces.

  Source

• 2015

  Acquire Glip to expand collaborationM&A

  Background

  RingCentral sought to extend its cloud phone offering into persistent team collaboration and workstream management.

  Action taken

  The company acquired Glip and incorporated messaging, file sharing, tasks, and event functions into its platform.

  Aftermath

  The acquisition strengthened RingCentral’s unified communications and collaboration proposition.

  Source

• 2021.07.27

  Reported2021.07.27

  Bandwidth announces Duet BYOC solution for RingCentral[3]Bandwidth宣布为RingCentral推出Duet自带运营商解决方案prnewswire.com

  Bandwidth announced plans to deliver early access to a new Bring Your Own Carrier solution for RingCentral, extending its Duet service to RingCentral's Message Video Phone platform.

• 2021.01.28

  Reported2021.01.28

  Atos and RingCentral launch Unify Office in the UK[4]Atos与RingCentral在英国推出Unify Officepcr-online.biz

  Atos and RingCentral announced the first release of Unify Office, a unified communications-as-a-service offering, in the United Kingdom.

• 2020.12.04

  Reported2020.12.11

  RingCentral wins HR Asia's 2020 China employer award[5]RingCentral荣获HR Asia 2020中国区最佳企业雇主奖prnasia.com

  RingCentral received HR Asia's 2020 Best Companies to Work for in Asia award for China. The article reports that the award was announced on December 4.

• 2020.08.11

  Reported2020.08.11

  Alcatel-Lucent Enterprise and RingCentral announce strategic partnership[6]Alcatel-Lucent Enterprise与RingCentral宣布建立战略合作伙伴关系finanznachrichten.de

  Alcatel-Lucent Enterprise and RingCentral announced a strategic partnership to introduce the co-branded Rainbow Office cloud solution and jointly develop programs for the enterprise cloud communications market. The solution was stated to be available in the first quarter of 2021.

• 2020.02.27

  Reported2020.02.27

  Xeo AI and RingCentral announce a channel partnership[7]Xeo AI与RingCentral宣布渠道合作prweb.com

  Xeo AI announced a partnership with RingCentral to offer RingCentral’s cloud communications and collaboration solutions to business customers through Xeo AI’s channel network in Canada and the US.

• 2020.02.10

  Reported2020.02.10

  RingCentral provides first-quarter sales outlook[8]RingCentral公布第一季度销售展望benzinga.com

  RingCentral forecast first-quarter sales of $257 million to $259 million, compared with the $249.2 million estimate.

• 2020.02.10

  Reported2020.02.10

  RingCentral reports fourth-quarter earnings[8]RingCentral公布第一季度销售展望benzinga.com

  RingCentral reported fourth-quarter earnings of $0.22 per share, above the analyst consensus estimate of $0.21.

• 2019.10.03

  Reported2019.10.03

  Avaya and RingCentral announce strategic partnership[9]Avaya与RingCentral宣布建立战略合作伙伴关系o.canada.com

  Avaya announced an exclusive strategic partnership with RingCentral. RingCentral is contributing $500 million, including a preferred-equity investment and an advance for future payments and certain licensing rights; the transaction is subject to customary closing conditions and regulatory approvals.

Read more

1. 1RingCentralen.wikipedia.org
2. 2RingCentral official websiteringcentral.com
3. 3Bandwidth宣布为RingCentral推出Duet自带运营商解决方案prnewswire.com
4. 4Atos与RingCentral在英国推出Unify Officepcr-online.biz
5. 5RingCentral荣获HR Asia 2020中国区最佳企业雇主奖prnasia.com
6. 6Alcatel-Lucent Enterprise与RingCentral宣布建立战略合作伙伴关系finanznachrichten.de
7. 7Xeo AI与RingCentral宣布渠道合作prweb.com
8. 8RingCentral公布第一季度销售展望benzinga.com
9. 9Avaya与RingCentral宣布建立战略合作伙伴关系o.canada.com
10. 10Avaya announces strategic partnership with RingCentralo.canada.com