A pet entering Switzerland needs a valid rabies vaccination, given at least 21 days before travel if it's the animal's first vaccine or if a previous one has lapsed. The microchip must already be in place before the vaccine is given, or the vaccination doesn't count.
If you're travelling from a country classified as higher-risk for rabies, Switzerland may also require a rabies antibody titer test, carried out at an approved laboratory, with its own waiting period before entry — this is on top of the microchip and vaccination, not instead of them. Check your specific country's classification with a vet before you finalise travel dates.
Good news for Switzerland specifically: the country itself has had no wildlife rabies cases in decades, so this requirement exists to keep it that way, not because of any current outbreak risk inside the country.