Squads and tribes:

• is a way to scale agile to fit the "needs and sensibilities of an internet-economy-scale business"
• removes unnecessary dogma, fluff and/or ceremony and lets the squad decide what it needs.

• has each squad acting as an independent startup (i.e. it has every function it needs to succeed)

• Works well with a Service Oriented Architecture (or similar)

• benefits squads that own all aspects of their product/service (infrastructure, monitoring, KPIs, metrics, A/B tests)
• is facilitated by infrastructure and release tooling as a service/squad and unified platform stacks
• thrives on unified, lightweight communication channels