In today's digital era, web servers play a critical role in ensuring data security, user trust, and compliance with regulations. They are the gatekeepers of web content, enabling encrypted communication, data integrity, and reliable content delivery. Among the leading web servers, Nginx, Apache, and Cloudflare Server top the list. Web servers are essential in the face of increasing cyber threats, providing safeguards through access control, availability, and data confidentiality and integrity. Access control is facilitated by authentication and authorisation, while availability is achieved through mechanisms like fault tolerance and scaling. Data confidentiality is upheld via encryption and Transport Layer Security for secure connections, while data integrity is preserved with the help of public key infrastructure (PKI) and digital certificates.