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Add-ons are extra features available for purchase with web hosting. A typical web hosting package will have the essentials for building a webiste. However, in the case that more is needed, you can often buy small packages of email accounts, disk space, bandwidth, SSL certificates, shopping carts, and so on. Not everybody will need add-on features.

Previous Web Hosting Term: Accredited Registrar
Next Web Hosting Term: ADN - Advanced Digital Network