Microsoft Exchange Server Standard 2019 - 1 User CAL Education CSP (Perpetual)

1. Microsoft Exchange Server Standard 2019: This refers to the version and edition of Microsoft's email and calendaring server software. Exchange Server Standard 2019 is a widely used version that provides email, calendar, contact, and task management capabilities.

2. 1 User CAL: CAL stands for Client Access License. A User CAL allows one user (individual) to access and use Exchange Server functionalities. This means that each user who needs to access Exchange Server from a device will require a User CAL.

3. Education CSP: CSP stands for Cloud Solution Provider. This indicates that the license is obtained through a Microsoft Cloud Solution Provider, which is a partner that provides Microsoft cloud services such as Exchange Server.

4. Perpetual: In this context, perpetual licensing means that once the User CAL is purchased, it does not expire. The license remains valid indefinitely for the specified version of Exchange Server (2019 in this case).

To summarize, "Microsoft Exchange Server Standard 2019 - 1 User CAL Education CSP (Perpetual)" describes a perpetual (non-expiring) license for one user to access Microsoft Exchange Server Standard 2019, acquired through an Education Cloud Solution Provider. Each user who accesses Exchange Server will need their own User CAL to comply with licensing requirements.