Apple, Google, and Samsung will accept Matter certification for their own Works With programs
Briefly

Getting all those badges is about to get simpler for manufacturers, though. The Connectivity Standards Alliance (CSA), which runs Matter, announced today that Apple, Google, and Samsung will all accept its certification for their Works With programs.
This means device makers won't have to put their gadgets through a separate testing program for each platform to wear its Works With badge. If they get certified as a Matter Device by the CSA, they can show their results to the other ecosystems and get those badges, too, without doing any more testing.
The CSA also announced a new FastTrack Recertification Program and a Portfolio Certification Program that lets companies certify multiple products more efficiently. A complaint I've heard frequently from smart home companies is that getting devices certified and recertified by Matter when they make a change or an update is a laborious and expensive process that slows down their development work.
Read at The Verge
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