Patient presented in 2017 as a chat-based collaboration platform bundled with Office 365. Experienced explosive growth during 2020 pandemic, surging from 32M to 270M MAU. By 2023, patient reached 300M monthly users. In Oct 2023, patient underwent major reconstruction — "Teams 2.0" rebuild reduced memory consumption by 50% and improved launch speed. Copilot AI admission began Nov 2023 at $30/user/mo premium.

Notification fatigue syndrome. Users report overwhelming activity feeds. Interface complexity causes onboarding friction. External guest access requires multi-step configuration. Copilot AI therapy is effective but prohibitively expensive for many organizations.

Patient became a pandemic phenomenon in 2020, reaching 300M daily participants. Post-pandemic, experienced first revenue decline in 2022 and "Zoom fatigue" diagnosis in the general population. In 2023, patient rebranded as "Zoom Workplace" — adding Team Chat, email, calendar, and whiteboard to evolve into a full collaboration suite. AI Companion launched free with all paid plans.

Post-pandemic adjustment disorder. Revenue and stock price below pandemic peaks. Chat features still developing compared to Slack/Teams. No native document co-editing capability. Higher per-user cost than Teams. Brand perception shifting from "essential" to "one of several options."

Patient was the pioneer of channel-based workplace messaging. Acquired by Salesforce in Dec 2020 for $27.7B. By 2023, reached est. 42M DAU. Slack Canvas launched — adding document-like surfaces inside channels. Huddles matured with video, screen sharing, and multi-person. Salesforce integration deepened with native CRM connections. Filed EU antitrust complaint against Microsoft's Teams bundling.

Integration dependency syndrome. Free plan limits message history to 90 days. Video calling capped at 50 participants — requires Zoom/Meet for larger meetings. Pricing at $7.25+/user can compound rapidly at scale. No native phone system. Under Salesforce ownership, strategic direction tied to enterprise CRM.

Patient was born from Google Hangouts rebranding in 2020. Achieved rapid adoption as the browser-based, zero-install option. By 2023, market share reached ~17% globally. Google Chat (companion patient) matured with Spaces for organized group collaboration. Translated captions expanded. Duet AI (now Gemini) began integration across Workspace in late 2023.

Ecosystem enclosure syndrome. Best experienced only within Google Workspace — limited appeal outside that environment. Google Chat is functional but lacks Slack's depth and Teams' Office integration. Third-party app ecosystem is smaller. Video features trail behind Zoom in large-meeting scenarios.

The oldest patient on the ward — 28 years in collaboration care. In 2023, Webex AI Assistant expanded dramatically: meeting summaries, real-time translation in 100+ languages, and messaging catch-up features. Noise cancellation remains best-in-class, effective even on low-bandwidth connections. FedRAMP authorization maintained for government/regulated sectors. 650M monthly meeting participants.

Legacy complexity disorder. UI can feel enterprise-heavy for SMBs. No native document co-editing (requires external Office/Google suite). Integration ecosystem smaller than Teams/Slack. Pricing at $14+/user/mo positions patient at premium tier. Best outcomes observed in Cisco-rich environments.