Performance and security. Source Formula Source vs API. Alternatives?
I have the following question. I've experienced that when I a write a filter to retrieve the data from a source the response time is much slower than when API is used. Now, for me, it's important to avoid using API's are public and I don't want to expose any data. Is there an alternative way where Can I have a similar or improved performance with the functions available in power apps without using an API? Do I have another alternative to API's to provide a secure and rapid response time? Thanks!