FastWebHost account setup is usually very quick, often completing within a few minutes. After signing up and completing payment, you should receive an email with your account details and login information.
This email will usually contain instructions for accessing your control panel and getting started.
However, domain registration can sometimes take a little longer, from a few hours up to a couple of days, depending on the registrar and TLD (top-level domain, like .com, .org, .net).
This is generally outside of FastWebHost's direct control, as they likely use a third-party registrar.
So, while your hosting account itself should be ready quickly, if you're also registering a new domain name through them, factor in a bit of extra time for that process to complete.
Conclusion:
New shared/reseller hosting account purchases are activated the same day, typically within hours of purchase. Standard Dedicated Server configurations can take 24-48 hours, while custom Dedicated Server configs can take up few business days to complete deployment.