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Handshake Protocol is used to establish sessions. This protocol allows the client and server to authenticate each other by sending a series of messages to each other. Handshake protocol uses four phases to complete its cycle.
SSL Bundles
An SSL bundle typically refers to a collection of certificates.
The main difference is that an SSL certificate is the singular certificate for a domain, while an SSL bundle contains multiple certificates necessary for complete validation and trust establishment.
The bundle can include the SSL certificate, intermediate certificates and a root certificate creating a trust chain to the server. Thus, An SSL Bundle encapsulates all the trust material and configuration settings, such as keystores, certificates, and private keys, into a single, easily manageable unit.