NPO is the public broadcaster umbrella organization. It could very roughly be compared to e.g. BBC, with the big caveat that NPO itself does not create any cont

NPO is the public broadcaster umbrella organization. It could very roughly be compared to e.g. BBC, with the big caveat that NPO itself does not create any content. Instead, its member broadcasters do. That's a relic of the Dutch pillarized system. NPO is funded both through taxes, and through advertisements. STER is the organization that handles the latter, and indeed it is a public body.