Unified Communications is the integration of communication services such as instant messaging (chat), presence, voice, mobility (twinning/mobile app), audio, web & video conferencing, desktop sharing, data sharing/collaboration, call control and speech recognition with non-real-time communication services, such as unified messaging (integrated voicemail, e-mail, SMS and fax).
SD-WAN – also referred to as Software Defined Wide Area Network, is an application-aware, over-the-top WAN connectivity service that uses policies to determine how application flows are directed over multiple underlay networks, irrespective of the underlay technologies or service providers who deliver them.
Cybersecurity is the practice of defending computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks. It's also known as information technology security or electronic information security.