T
Teams Line
Express · Microsoft Transit Authority · Est. 2017
SharePoint & Filesinterchange with M Line
Copilot AI (+$30/mo)express surcharge
Teams Phone (+$10/mo)express surcharge
320M+ daily riders. The most comprehensive line on the network — all core stations included at base fare. Requires M365 pass. 2025 upgrades: Copilot express service, voice enrollment, brand protection, Meet interop. The Swiss Army Knife of collaboration transit.
Transit Advisory
The trunk line of the network. Nothing else serves this many stations at this fare. Essential for M365 commuters. But the Copilot express adds $30 and the platform can feel crowded during peak hours.
Service Disruptions
- Copilot express requires +$30/mo surcharge
- Resource-heavy on older rolling stock
- Messaging service trails S Line threading
- Enterprise deployment: 1–3 weeks to commission
- Needs full M365 transit pass for best service
- Can overwhelm new riders
Z
Zoom Line
High-Speed · Independent Operator · Est. 2011
Phone & Eventsadd-on services
~56% global video market share. The high-speed line — best video quality on the network. AI Companion free on all paid passes vs Teams' $30 Copilot surcharge. 300M+ daily riders. Ecosystem-independent — connects with any transit authority.
Transit Advisory
The express service for video. Fastest, smoothest ride on the network. Free AI is a major fare advantage over the T Line. Pair with S Line for daily messaging commute.
Service Disruptions
- Free ride: 40 min only (T/M Lines: 60)
- $13.33 fare is 3× the T Line base
- Chat service not primary communication line
- Usually paired with S Line for messaging
- Download required to board
- 2020 security incidents — largely resolved
S
Slack Line
Local · Salesforce Transit · Est. 2013
Channels & Threading (Best)
Slack Connectcross-org interchange
Full AI (Biz+ $12.50)premium zone
2,600+ integration connections — the most connected line on the network. Best threading and channel architecture. Salesforce-owned. 87% rider satisfaction — highest rated. Huddles cap at ~50 — pair with Z Line for large gatherings.
Transit Advisory
The nervous system of the network — connecting every other line through 2,600+ integration junctions. Best daily commute experience. Always pair with Z Line for video express.
Service Disruptions
- Video limited to ~50 (Huddles) — needs Z Line
- No webinar or large event service
- Free pass: 90-day history, 10 connections only
- Full AI: Biz+ zone ($12.50/mo) required
- Per-rider fare scales steeply at 500+
- Channel sprawl without route governance
M
Meet Line
Light Rail · Google Transit · Est. 2017
Zero Installation (Browser)
Gemini AI (all Workspace)
Live Docs Co-Editingunique to M Line
The only line requiring zero ticket purchase or installation. Click a link — you're aboard. Gemini AI on all Workspace passes. Live Docs co-editing is an M Line exclusive. #1 by search volume in 28+ countries. 60-min free — tied with T Line for longest free ride.
Transit Advisory
The light rail — no ticket booth, no turnstile, no app download. When collaboration should just happen, this line removes every barrier to boarding. Best for Google Workspace commuters and education routes.
Service Disruptions
- Fewer advanced route controls than T or Z Lines
- 100-rider free cap (T Line: 300)
- Narrower integration network
- Google Chat companion service less refined
- Full service requires Google Workspace pass
- Fewer breakout and express options