[1] Unlike most Traditional CAs, Digi-CA™ [2] offers both Disposable and Renewable Binding Options for your Digi-IDs™ [3]. As you come to truly understand the implications of selecting your Binding Option, you will come to see the relevance, or necessity, for Key Management.
Links:
[1] https://www.digi-sign.com/downloads/download.php?id=digi-ca-pdf
[2] https://www.digi-sign.com/digi-ca
[3] https://www.digi-sign.com/digi-id