This is absolutely the way to go, but be aware that it can lead to concentration/sectoral risk when managers aren’t aware of positions in the other portfolios. For example, Goldman could invest heavily in tech or pharma or whatever, not realising that JPM also have a big investment in that area.
Does that mean it wouldn’t be an issue if you bring an SSL cert from say ZeroSSL but use Cloudflare for DNS, caching, DDoS protection etc?