The TV series "Severance" is available to watch on Apple TV Plus. All episodes from the two seasons are available for streaming on Apple TV Plus, which holds the global rights to the show. Subscriptions typically cost around $10-$13 per month depending on the region and come with a free trial period. This applies in regions including the US, Canada, the UK, and Australia. Severance is not available on HBO Max or Prime Video for streaming, despite the search results showing links for those platforms. In summary, the best and official place to watch "Severance" is Apple TV Plus with a subscription.