Choose a stack you won't fight
The stack you pick quietly decides how much friction you live with for the next year. Get it roughly right and the AI helps you fly. Get it wrong and you spend your days wiring services together instead of building.
Start with the consumer, because that one choice cascades. Web app or mobile app is not a detail; it determines your whole toolchain, your deployment, your store approvals, everything downstream. Decide it consciously and early.
Then bias hard toward simple. The most common self-inflicted wound is stacking services that do not need to coexist: a database here, a host there, a separate cloud, another auth provider, four dashboards and four logins for what one ecosystem could do. Every extra service is another thing to learn, another thing to break, another seam for the AI to get confused at. There is a concrete reason this matters more with AI than it did before: models perform best on common, well-documented paths, because that is what their training data is thick with. A mainstream stack means the AI has seen ten thousand examples of the thing you are asking for; an exotic one means it is improvising. Stay inside one popular ecosystem until you have a real reason to leave it.
You do not need to know the perfect stack to start. A clean way to borrow good judgement: ask the AI what stack a serious competitor in your space would use and why, then follow that proven path rather than inventing one. Take the options it gives you, feed them back, and ask which one actually fits your case. You are not looking for the most powerful stack, you are looking for the one with the fewest moving parts that still does the job.
Worked example. Say you are building a web app that needs sign-in, a database, file storage and a place to host the front end. The fighting-the-stack version uses one provider for auth, a second for the database, a third for storage, a cloud function host for the fourth, and a separate front-end host. That is five accounts, five sets of docs, and five seams where the AI has to guess how the pieces connect. The flying version picks a single platform that bundles auth, database and storage behind one set of credentials, plus one host for the front end. Two accounts, one mental model, and every integration is a path the AI has seen a thousand times. Same app, a fraction of the friction.
The point is not the specific names, which date quickly. The point is the discipline: fewest services, one popular ecosystem, a consumer-led choice, and a proven path borrowed from people who already solved it. If you want the equivalent discipline applied to the tools you grow with, the solo founder growth stack playbook makes the same argument for the marketing side.