Amazon FSx or Amazon File System X; is a fully managed service from AWS for its users. This is basically a service that enables you to launch and run your File System within few clicks, without worrying about provisioning, infrastructure, Software configuration, patching, and backups, etc. Like other AWS services, FSx offers cost-effective solutions, high reliability, and integration with other AWS services. Amazon FSx comes with two File Systems to choose from Amazon FSx for Windows File Server and Amazon FSx for Lustre.
If you wish to know more about Amazon FSx, check out the following YouTube video on Amazon FSX. And if you aim to get AWS certified, I recommend you check out the AWS certification course from a reputed e-learning company, to help meet the skillsets needed to crack the certification.