Different tools, different jobs
Channel debates in B2B usually assume there's a single winner, as if cold calling and paid ads were competing for the same crown. They're not. They have different shapes, and pretending one replaces the other is how budgets get wasted on the wrong fit.
Cold outbound, calls and email, is a targeting tool. Its superpower is precision: you choose the exact companies and people you want and go straight at them. That's invaluable when you have a defined list of dream accounts. The cost is that it's slow, labor-intensive, and depends heavily on timing. You're interrupting someone who didn't ask to hear from you, and most of the time they're not ready.
Paid ads are a reach-and-capture tool. They put you in front of a lot of the right people at once and catch the ones already looking. They scale in a way outbound never can, and they feed the platform signal about who converts. But ads buy attention, not trust. A single ad rarely closes a B2B deal, it starts a relationship that something else has to carry forward.
LinkedIn lives in the middle. Showing up consistently, through content and presence, builds familiarity before you ever ask for anything. It's the reason a cold email or an ad lands differently when the buyer has seen your name for months: you're not a stranger interrupting them, you're someone they half-recognize.
When they stack instead of compete
Put that way, the channels stop competing and start stacking. Ads and LinkedIn create awareness and capture demand at scale; outbound goes precisely after the accounts you most want; presence over time makes all of it warmer. The real lever underneath is the same one we lean on everywhere: feed your closed deals back into the system so you keep targeting people who look like real buyers, not just whoever was cheapest to reach. The answer to "which channel" is usually "more than one, each doing its job, working as one system from first touch to closed deal."