Salting is a technique used to enhance the security of hashed passwords by adding a unique, random value (salt) to each password before hashing it. This prevents attackers from easily decrypting passwords using rainbow tables, which are precomputed tables for reversing cryptographic hash functions. Since each password has a unique salt, the same password will produce different hash values, making rainbow table attacks ineffective.

Retention policies dictate how long data must be stored to comply with local and international regulations. Non-compliance can result in legal and financial penalties.

HTTP headers can be used to mitigate risks associated with Cross-Site Scripting (XSS). Security- related HTTP headers such as Content Security Policy (CSP) and X-XSS-Protection can be configured to prevent the execution of malicious scripts in the context of a web page. XSS (Cross-Site Scripting): A vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. HTTP headers like CSP help prevent XSS attacks by specifying which dynamic resources are allowed to load.
SQLi (SQL Injection): Typically mitigated by using parameterized queries and input validation, not HTTP headers.
DoS (Denial of Service): Mitigated by network and application-level defenses rather than HTTP headers.
SSL (Secure Sockets Layer): Refers to securing communications and is not directly mitigated by HTTP headers; rather, it's implemented using SSL/TLS protocols.

A load-balanced architecture distributes incoming application traffic across multiple servers, potentially in different geographic locations, to optimize resource use, improve response times, and provide redundancy if any single server fails.