Why not build your own?

I have an ice cream maker. You pour in milk, sugar, and whatever else you like, switch it on, and it makes ice cream. It makes almost any flavor I ask for. Peanut butter and pepper, no problem. Chocolate pretzel, can do. It works, and it's easy.

Even so, I buy my ice cream at the store. The machine sits in the closet.

Building your own software is like making your own ice cream. You could do it. Your agent could pull in a brand's test results, write the analysis, and get an answer.

The difference in effort is small. Buying a pint takes a few minutes, and making one means pouring ingredients into a bowl. But when I'm standing in the freezer aisle, even that difference matters. Every hour I spend making ice cream is an hour I don't spend on a core competency.

My homemade batches sometimes had bugs. The pretzels went soggy once, and one batch never froze at all.

Systems for understanding experiments have their own bugs. Purchases are relatively rare, so the system has to learn as much as it can from other events, like clicks. But, don't rely on clicks too much. Some ideas will look good by luck, so we need a way to keep a lucky result from passing for a real one. When results come in, there is a strong pull to invent a reason for whichever ad did best, after the fact. An ad testing system needs to resist that pull with its design.

Your agent would probably catch these bugs, and the others too. They just take some testing and care.

But, working with a partner means you can focus on what makes your product great. Someone else handles the bugs, and when they find one, they fix it for every customer.

That is why I buy ice cream. The machine could make it, and I could get it right, usually. But the store already got its soggy batches out of the way.