ISO 27001-Compliant Communication Vendors (2026) | Compliance Posture

ISO 27001-Compliant Communication Vendors

Communication vendors are evaluated against ISO 27001 when they handle the workflows this framework governs. Currently, 9 vendors in our Communication category hold ISO 27001 certification and 1 holds it partially or conditionally. Each listing below links to the vendor's full compliance profile.

Communication vendors that hold ISO 27001 certification

Microsoft Teams

Chat, meetings, and collaboration app, part of the Microsoft 365 compliance program.

Slack

Team messaging and channel-based chat platform for workplace communication.

Cisco Webex

Video conferencing, calling, and collaboration platform from Cisco.

Twilio

Cloud communications platform providing APIs for SMS, voice, video, and email messaging.

ISO/IEC 27001:2013

Zoom

Video conferencing, webinar, and unified communications platform.

SendGrid

Email delivery platform providing transactional and marketing email services with analytics and automation.

ISO/IEC 27001:2013

RingCentral

Cloud communications platform for phone, messaging, video, and contact center.

Vonage

Cloud communications APIs and unified communications platform, owned by Ericsson.

Dialpad

AI-powered business communications platform (calling, messaging, meetings, contact center).

2022

Loom

Async video messaging tool for screen recording and team communication, owned by Atlassian.

Available at Atlassian platform level; not confirmed as Loom-specific

These communication vendors do not currently hold ISO 27001 certification:

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