When our company becomes more specialized in terms of marketing, HR, and financial tools, we are facing a significant data fragmentation issue. I'm looking for advice on saas integration best practices specifically, whether it's better to use a dedicated iPaaS like Zapier or MuleSoft, or if we should rely on custom-built API connections. We would like to make our CRM communicate with our accounting application automatically, without the human intervention of data input into the system, yet I am concerned with the security risks and the expenditure of keeping up these links. When you have had to deal with a complex technology stack, what was your approach to the integration process so that you have all your applications keep pace with each other in real time and that none of your applications crashes?