Where to use Apex?

So, let me ask you this: where exactly can someone utilize Apex? Is it only limited to a specific set of online platforms or can it be used across a broad range of digital services? Are there any particular industries or sectors that Apex has been designed to cater to? Additionally, are there any restrictions or limitations in terms of geographical locations where Apex can be employed? Lastly, are there any recommended use cases or scenarios where Apex shines as the optimal choice for facilitating transactions?