Key Partners in the Business Model Canvas refer to the strategic partnerships that enable a business model or make it more efficient. No company can cover all activities and resources on its own. The decision about which partners to involve and which activities to keep internal is one of the most fundamental strategic choices.
Four types of partnerships exist: strategic alliances between non-competitors (Apple and Foxconn in manufacturing), strategic alliances between competitors (coopetition, e.g., Samsung supplying displays to Apple), joint ventures for new business fields, and buyer-supplier relationships (Spotify and music labels). The motivation for partnerships typically lies in optimization and economies of scale, reduction of risk and uncertainty, or access to resources and activities that are not available internally.
The field comes from the Business Model Canvas by Osterwalder and Pigneur. In the analysis, the make-or-buy question is central: What belongs to the core and must be mastered internally? What can a partner do better, faster, or cheaper? It becomes critical when key partners gain too much bargaining power, turning the dependency into a strategic weakness.