4. Conclusion

As IT systems evolve more and more frequently, IT audits are essential in today's business environment.

On the one hand, choosing to have it carried out for one's own needs should be a matter of course, with the aim of remaining efficient and competitive. Although it can be costly, it allows you to take a step back from your environment, while retaining an exhaustive, innovative and pragmatic vision of the business(es) in which you operate.

On the other hand, it remains the safest solution for initiating business relationships with partners, suppliers and customers.