I think you'll find it referred to as 'Open Architecture...

I think you'll find it referred to as 'Open Architecture Approach' such that clients can use whatever is best for them.

See: https://www.professionalplanner.com.au/2020/11/not-one-skerrick-of-pressure-ioof-touts-clean-synergy-model/

"While IOOF’s acquisition of MLC Wealth has raised questions about how deeply vertical integration will be leveraged to take advantage of its increased scale, the group’s head of research says the team remains firmly agnostic on product.Matt Olsen, who joined IOOF in 2018 after heading up research at Lonsec, says the group is intent on supporting its advisers and their clients, not building a distribution funnel for its own products.“Nobody puts any pressure on me to promote an internal product,” Olsen says. “Quite the opposite; the philosophy from Renato (Mota, CEO) at the top is that any adviser, external or internal, has to live and die by the quality of their advice and what they recommend.”

There's also significant internal platform development going on too: https://www.ioof.com.au/evolve