Sales vs portfolio management in asset management

Hi all-

I’ll be interning this summer in the Global Client Group at an asset manager with over $800 billion in AUM, and I’m looking to better understand the differences between the sales/client side and the portfolio management side. I know the roles vary in terms of client interaction and investment focus, but I’d appreciate any insight from industry professionals on the key advantages and drawbacks of each path.

Additionally, I’d love to hear what I should expect from a role within the Global Client Group compared to portfolio management.