Advancement of technology is a reality of this ultra modern world and thus its outcome does not seem an unreal too.
The auto shwicher functions manage SMPP from backend, when any SMPP have heavy load/Down then its auto shwitch to another one.
No Matter what you doing right now, just schedule your sms according to your preferable time, SMS auto blast according to schedule time.
That Days gone when reseller was appoint A-Record. Now you can direct login from your website, No need to appoint A-Record.