Get moves between providers

The from→to matrix of participants that changed Access Point provider in a trailing window: who lost participants to whom, for the whole network, in one call. The top largest providers on each side keep their identity (from = sources, to = destinations; a provider can be on both). Every other provider folds into one "Other" node per side, and other gives the number of folded providers and their participants.

pairs is the COMPLETE folded matrix, largest first: a null from or to is the "Other" node of that side, zero cells are omitted, and the values sum to total exactly. A node's value is all its moves in the window, also the moves to or from a folded provider.

A move inside one provider (between two of its own Access Points) is not counted. Every day is the PROBE-OBSERVATION day — when the change scan saw the SMP record change — not the day a migration was executed. A window with no moves returns total: 0 and empty lists.

PLATFORM MOVES. A mover is a platform move when the platform that serves the participant stayed and only the certificate Seat changed: it is not a customer decision. The verdict is per DIRECTED provider pair (from → to), over all its movers since 2026-08-02, with one of two reasons (same_host, sub_provider): at least 90% of the movers whose endpoint host can be compared (5 or more, and at least 50% of all movers of the pair) kept their endpoint host, or at least 90% of 25 or more movers still carry, at the new provider, the sub-provider brand of the provider they left. It is a CURRENT judgment, computed again on every rollup cycle. The movers of a platform-move pair are in no node, in no cell and not in total: platform gives their number and the number of directed provider pairs they come from. The matrix has Providers only; a Vendor is not in it.

country_share gives the movers of one country (FR) among all movers of the window that have a country. The matrix has no country filter; this share includes the platform moves.