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A Content Security Policy (CSP) is an added layer of security that helps businesses and security teams mitigate certain types of client-side attacks.

SameSite prevents the browser from sending this cookie along with cross-site requests. The main goal is to mitigate the risk of cross-origin information leakage. It also provides some protection against cross-site request forgery attacks.

Caching stores information that is requested by many clients in memory and serves this information as the results to client requests. While the information is still valid, it can be served potentially millions of times without the cost of re-creation.

HTTP/2 was released in 2015 as a major revision to the HTTP/1.1 protocol. It was derived from the SPDY protocol as a way to improve the online experience by speeding up page loads and reducing round-trip time (RTT), especially on resource-heavy web pages.