[preg_match]

For businesses that build software (which is more than you'd think, as this includes the entire financial sector), building vs. buying has an entirely new scale.

At work, which I won't say where, we replaced a few SaaS we were using with in-house software. We largely have a culture of in-house software so it made sense. These were not small tools. They were behemoths created by multi-billion dollar software houses. And we replaced them, entirely, in the span of weeks. The reason it worked is we already had many domain experts in those tools.

The advantages don't stop at "money". The biggest advantage is complete control. We can integrate across our other tools, for free. We can add whatever features we want.