In web applications, authentication is the critical process of verifying a user's identity before allowing them to access protected resources. Its primary goal is to ensure that only legitimate and recognized individuals can interact with sensitive data or functionalities. Users typically provide credentials, often a username and password, which the application then validates against its stored records. If these credentials match, the user is considered authenticated, and the system grants them access. This fundamental security mechanism prevents unauthorized entry, forming an essential layer of protection and an integral part of web application security. More details: https://astra-s.com.ua