Google CSS proof comes first.
Microsoft Shopping expansion should start after product clusters have enough evidence to justify a new channel.
Microsoft Shopping should follow proof, not guesswork.
ShopSailor should only recommend channel expansion when feed quality, tracking context and commercial value have already been proven in the first activation loop.
The same blockers still matter.
Shipping, titles, identifiers, policy and availability checks remain part of the readiness model.
Channel context must be separated.
Clicks, products and outcomes should remain distinguishable by channel, market and activation decision.
Do not stack changes blindly.
New channel activity should not be layered on top of recent campaign changes without review.
Scale only where value is strong.
Demand signal alone is not enough; commission, margin and merchant rules still decide scope.
Explain why the channel was next.
The recommendation should show why Microsoft Shopping was safer than more Google CSS scale or feed fixes.
Next step
Turn the guide into a scoped decision path.
Share your market, feed and campaign context so ShopSailor can show what should scale, hold or be fixed first.