Start with proven experience, not the number of logos on the website. Ask to see a couple of engagements that resemble your technology stack, and then ask specifically whether those engineers are still with the ai chatbot development company. A serious vendor is happy to connect you with the people who would work on your project. Vague answers at this stage almost always mean the delivery team is not the team you were shown.

The agreement deserves more scrutiny than the proposal. Three sections matter more than the rest: intellectual property assignment, the NDA, and exit terms and app store optimization agency handover. Every artifact has to transfer to you once invoices are settled, including documentation, pipelines and deployment scripts. Watch seo for saas company any clause that keeps so-called reusable libraries with the vendor, because that is often the part you cannot replace later.

Ask how they estimate. An honest estimate is accompanied by a written set of assumptions, a task-level breakdown and an explicit range. A fixed-bid deal only makes sense when the specification is complete; in any other case the provider adds a risk premium and you fund the buffer regardless. Hourly billing puts the risk on your side, so it demands a sprint cadence, demos and a budget cap.

Process matters more than headcount. Establish how change requests are handled, who defines done and what the QA setup looks like. A well-run team can show you a working build every one or two weeks. Acceptance criteria in writing stay the only reliable protection against endless rounds of rework.

Before signing, consider the end of the engagement before it becomes urgent. Insist that the source repository sits under your account from the first commit, and software development partner that the documentation is refreshed in every sprint. A vendor with nothing to hide will agree quickly; resistance at this point tells you a great deal.