Short answer: Buy an off-the-shelf agent when the job is generic and the data is standard — you'll be live in weeks. Build custom when the agent runs on your proprietary data and workflows and becomes a competitive moat. In practice, most businesses land on a managed middle path: custom where it differentiates, bought where it doesn't, with a partner running both.

An agentic workflow is a business process where AI agents plan the steps, use tools, and check their own work to reach a goal — instead of following a fixed script. Unlike linear automation, which runs the same steps every time, an agentic workflow adapts to context, handles exceptions, and coordinates hand-offs between agents, systems, and people.

Agentic context engineering — building the infrastructure that captures, distills, and routes your business knowledge to the right agent at the right moment — is the real moat in agentic operations. The model is a commodity. Every company will have access to the same frontier models, the same orchestration frameworks, the same agent toolkits. What they will not have is your organization's accumulated context: the decisions made in Tuesday's client call, the constraint surfaced in an internal chat, the process refinement your team discovered two quarters ago.

There is a quiet assumption buried in most enterprise AI adoption: that the path to better output is a better single prompt. Refine the wording, add more context, raise the stakes in the instruction, and the model will eventually produce the answer you wanted. That assumption is responsible for a lot of plateaued AI programs. It treats a probabilistic system as if it had one best answer waiting to be unlocked by the right key.