Team chat has become table stakes for distributed teams, but the choice between Slack, Microsoft Teams, Lark, and unified platforms like Orin isn't obvious when you factor in cost, integrations, and where your customer conversations actually live. If you're an SMB in Southeast Asia or anywhere else, you're likely running 3–8 tools right now. Team chat is one. CRM is another. Messaging for customers is a third. Each one costs money, each one holds different customer data, and none of them talk to each other well. That friction adds up. Here's what matters when you're choosing: total cost of ownership, whether your customer conversations stay siloed or feed into a CRM, integrations to the tools you actually use, and whether the platform works in your region without compliance headaches. The core feature gap: team chat vs. unified messaging Slack, Teams, and Lark do one thing extremely well: synchronous team communication. Threads, channels, search, integrations. They're built for teams talking to each other. Orin does team chat, but it bundles it with unified customer messaging —WhatsApp, SMS, email, live chat in one inbox. That's a different problem. You're not choosing Orin for the team chat feature alone; you're choosing it because your customer conversations and internal coordination happen in the same platform. This matters if: Your sales team closes deals on WhatsApp but has to paste conversations into a spreadsheet to brief the delivery team. Your support team handles customer issues on email and WhatsApp but has no visibility into what sales promised. You're paying for a CRM to store deals but your team still uses Slack threads as the source of truth. If your team only needs internal chat, Slack or Teams will do that better and cheaper. If you're also managing customer conversations, the gap closes. Per-seat cost: where the math diverges Slack starts at $8.25/user/month (Pro plan, annual billing) for small teams. Scale to 50 people and you're paying ~$412/month. Add no-code automations, advanced search, or more integrations and you move to Enterprise Grid at $12.50+/user/month. Microsoft Teams is bundled with Microsoft 365. Business Standard is $13.50/user/month (email, 1TB storage, Teams). If you already own M365, Teams is free. If you don't, the comparison is Teams vs. the whole stack, not just chat. Lark is $5–$10/user/month depending on region and plan tier. It's the cheapest of the three if you're in Asia and don't need integrations beyond Lark's ecosystem. Orin pricing includes team chat bundled with unified messaging, CRM, bookings, invoicing, and accounting. For a 5-person team, you're looking at $60–$150/month depending on feature tier. Per seat, that's $12–$30/user/month, but you're not paying separately for a CRM, invoicing, or a customer messaging platform. The honest comparison: if you run only internal team chat, Slack or Teams wins on price. If you're also managing customer messaging, invoicing, and deals, the all-in-one math flips. Integrations and where data actually lives Slack has ~2,300 integrations. Teams has ~600 (but most enterprises already own other Microsoft tools). Lark has ~200–300, mostly within the Lark ecosystem. Here's the catch: having an integration doesn't mean data flows both ways or in real time. You might have a Slack-to-CRM integration that logs messages but doesn't surface deal context in Slack. You get notifications but not decisions. Customer isolation is the real issue. When a customer messages your WhatsApp number, does that conversation live in: Your CRM (where deals are)? Your WhatsApp business account (where you can't search or archive)? A separate messaging platform (another login)? Your team chat (mixed with internal chatter)? Slack and Teams don't solve this—they're internal-only. You have to bolt on another tool (Intercom, Freshdesk, etc.) to manage customer conversations. That's two systems, two data sources, two logins. Lark is starting to build customer messaging (Lark Message Center), but it's still nascent outside China. Orin's unified inbox brings customer messages and team chat into one view . A WhatsApp from a prospect automatically threads with internal team discussion about that prospect. Your CRM sees the context. No copy-paste required. Regional compliance and availability Slack and Teams work globally but require enterprise contracts for certain compliance needs (data residency, advanced security). For SMBs in Southeast Asia, they work fine but offer limited regional localization (invoicing, tax fields, local payment methods). Lark has a strong footprint in China and growing traction in Southeast Asia. If your team is distributed across Asia, Lark's server locations and lower latency can matter. Pricing is also regional (cheaper for Asia-based teams). Orin supports invoicing compliance for multiple regions (Malaysia's SST, Indonesia's e-invoicing, Singapore's GST). If you need to invoice clients across Southeast Asia and keep team chat in