For years, hiring in India meant one thing to most companies abroad: a lower invoice. You sent a brief, a junior somewhere did the work, and you crossed your fingers on the way it came back. That model still exists, and it still disappoints.
An extended team is a different arrangement entirely. The same senior people show up to your standups every day. They work in your tools, learn your product, and own outcomes the way a colleague down the hall would. The cost is still lower, but that is a by-product of where they sit, not the reason you hired them.
The test is simple. A vendor asks what task you want done. An extended team asks what number you are trying to move, then tells you the two or three things that will move it. If you are still assigning tasks, you bought the wrong thing.