A company that provides smart contract audit

So far I don't understand at all what it is and why I need it, but the more I try to understand crypto startups, the more often I come across the need for such a service as an audit. If you're in the crypto industry, dealing with companies like this, I'd like to get your advice and recommendations.

Among the specialists providing quality smart contract audits, I can definitely single out the pessimistic team, which starts first of all with pre-production code and general architecture recommendations. It will help you launch an already more reliable and secure product. Smart contract auditing is also there, and its cost can be calculated right away on the company\'s website.