DNS resolution is a core component ensuring domain names can be accessed correctly and serves as the first line of defense in establishing connections between websites, applications, servers, and users. With the development of cloud computing, traditional DNS resolution is gradually being supplemented and replaced by cloud DNS services, especially in areas like high traffic volume, cross-regional deployment, attack resistance, and ease of management, where cloud DNS demonstrates significant advantages. However, traditional DNS resolution is not without value; it still possesses unique advantages in certain scenarios.

　　Firstly, from a performance perspective, cloud DNS excels in resolution speed and global access experience. Cloud DNS services are typically maintained by large cloud service providers with nodes distributed globally, enabling DNS resolution to be performed near the user's access point, thereby reducing access latency and resolution time. Especially for websites with cross-border access and users in multiple regions, cloud DNS can return the optimal resolution result based on the user's geographical location and network conditions, achieving intelligent optimization of access speed. For example, when a user in mainland China accesses a server deployed in Hong Kong or overseas, cloud DNS can automatically direct the request to the nearest resolution node, reducing cross-border latency. Traditional DNS resolution, on the other hand, often relies on a single point or a small number of nodes, requiring resolution requests to traverse a fixed path, which can easily lead to high latency or instability when accessing servers across regions.

　　In terms of stability, cloud DNS also offers significant advantages. Traditional DNS resolution is typically deployed in fixed data centers or single-carrier networks. If the data center fails, the network is interrupted, or there is congestion, domain name resolution may completely fail, preventing users from accessing websites. Cloud DNS services, however, rely on distributed nodes and redundancy mechanisms. Even if some nodes fail, the system can automatically switch to other available nodes, ensuring the continuity and high availability of domain name resolution. This multi-node, multi-exit architecture allows cloud DNS to maintain relative stability even in the face of sudden traffic surges, network attacks, or carrier line anomalies, significantly improving the user experience.

　　Regarding management, cloud DNS offers more convenient and flexible functions. Traditional DNS resolution is generally configured through control panels provided by domain registrars or data centers. The operation is relatively fixed and lacks automation and batch management capabilities. For large-scale domains or business scenarios that frequently require modification of DNS records, traditional DNS resolution is inefficient and prone to operational errors. Cloud DNS typically provides comprehensive API interfaces, management consoles, templated operations, and batch import/export functions, supporting the quick addition, modification, or deletion of DNS records, and even dynamic adjustments through automated scripts. For projects requiring frequent IP switching, load balancing, and multi-line optimization, cloud DNS offers irreplaceable advantages in management convenience.

　　From a security perspective, cloud DNS also boasts significant advantages. Cloud DNS service providers typically offer DDoS protection, traffic scrubbing, and malicious access filtering capabilities, mitigating numerous network attacks at the domain name resolution level and reducing the risk of service interruptions due to DNS attacks. Traditional DNS resolution, relying on a single or limited number of nodes, is easily targeted, and a successful attack can render the entire domain inaccessible. Furthermore, cloud DNS provides features such as resolution log recording, anomaly monitoring, and access policy control, enabling users to promptly detect and handle abnormal requests, thereby improving overall security.

　　In terms of scalability and intelligence, cloud DNS enables richer functionality. Advanced features such as load balancing, intelligent scheduling, regional resolution, and weighted resolution can be easily implemented through cloud DNS. Users can dynamically select the optimal resolution result based on the visitor's geographical location, network operator, time period, or traffic strategy, improving the access speed and stability of websites or applications in different regions. Traditional DNS resolution often has limited capabilities in these areas, only able to perform basic static resolution such as A records, CNAME records, and MX records. It lacks intelligent scheduling and load balancing capabilities, failing to meet complex business needs.

　　However, traditional DNS resolution still has its value and advantages. Firstly, it is generally less expensive, suitable for small to medium-sized personal websites or low-traffic projects, and does not require reliance on third-party cloud DNS services. Secondly, regarding external dependencies, traditional DNS resolution is managed by the user or enterprise themselves, not relying on cloud service provider nodes and networks, providing greater controllability for applications in certain security-sensitive or special network environments. Furthermore, traditional DNS resolution technology is mature and stable, suitable for projects with long-term stable operation. For scenarios that do not require cross-regional optimization or have low traffic, traditional DNS resolution can still meet the needs.

　　In actual selection, enterprises and developers need to weigh the characteristics and requirements of the project. If the project has high traffic, a wide user distribution, high requirements for access speed and stability, or involves cross-border access scenarios, cloud DNS is undoubtedly a better choice. It offers features such as fast resolution, high availability, multi-line optimization, intelligent load balancing, and security protection, significantly improving user experience and operational efficiency. For personal blogs, small websites, internal testing environments, or low-traffic projects, traditional DNS resolution still offers advantages such as low cost, simple configuration, and strong controllability, sufficient to meet basic needs.

　　Furthermore, many enterprises choose to combine cloud DNS with traditional DNS. Core domains use cloud DNS to ensure access speed and stability, while retaining traditional DNS for backup or internal management, forming multi-layered redundancy and security. This strategy leverages the intelligent advantages of cloud DNS while providing the stability of traditional DNS in case of emergencies, thus achieving a highly reliable and highly available resolution architecture.

　　It is important to note that regardless of the chosen resolution method, continuous monitoring of domain name resolution performance, access latency, and error rate is essential. Regularly testing resolution nodes using tools such as ping, traceroute, and mtr, combined with access logs and traffic monitoring, can promptly identify potential problems, optimize resolution strategies, and ensure long-term stable and reliable domain name resolution.

　　In summary, cloud DNS resolution outperforms traditional DNS resolution in terms of performance, stability, ease of management, security, and scalability, making it particularly suitable for projects with high traffic, cross-regional operations, multi-line optimization, and stringent security requirements. Traditional DNS resolution, however, still holds advantages in terms of cost, controllability, and simplicity. Choosing the appropriate resolution method based on project type and business needs, or employing a hybrid strategy, can maximize the efficiency and reliability of domain name resolution, providing a solid foundation for websites, applications, and services.