AI architect: complete definition in AI for SMEs

An AI architect is the senior profile who designs the overall technical architecture of an AI project: component selection (LLM, vector database, infrastructure, storage), data flow definition, performance and cost sizing, scalability planning. They do not code daily — they decide how everything fits together.

What it changes for an SME

The AI architect ensures the project does not rest on hasty choices:

• Technology choices: which model? which database? which automation tool? Every decision has cost, maintenance and scalability consequences;
• Sizing: anticipating volumes (100 calls per day or 10,000) to avoid rebuilding everything in 6 months;
• Security: integrating security from the design phase, not as a last-minute patch.

The profile to look for

In SMEs, the AI architect is almost always outsourced — typically the role of a fractional AI director on initial missions. Their deliverable is an architecture diagram (diagram + decision notes) that guides development. Without an architect, developers build what they know how to do, not what is optimal for the need.