The software features include workplace chat, voice calling, video conferencing, encryption, and support for third-party plugins.

[7][1] The release of software components called Elements aimed to facilitate the development of custom applications on the Symphony platform.

[10] In September 2014, fifteen financial firms, including Bank of America and BNY Mellon, made investments in Symphony.

[12] In May 2017, Symphony secured an additional $63 million in funding from BNP Paribas and existing investors, resulting in a total valuation of the company surpassing $1 billion.

[16] On June 24, 2021, Symphony Communication Services LLC acquired Cloud9 Technologies, a voice trading turret phone system used by financial traders.