Hello. The server has two characteristics: CPU and RAM.
I am unsure which of these attributes impacts the website's ability to handle a heavy load. Can you assist me in understanding this better?

Your question is incorrect as it lacks specifics. To determine the appropriate server characteristics, you need to consider factors such as the websites hosted, CMS used, and future server utilization plans. Typically, when assessing a website's performance, multiple attributes are relevant, and RAM usage is critical, unlike CPU usage, which is mostly associated with processing scripts.

An optimized project is likely to be unaffected even if the CPU capacity is low. However, memory usage tends to increase with increases in visitor traffic, and therefore, adequate RAM is necessary. The most reliable way to ascertain the appropriateness of server characteristics is through testing under real-world conditions.

When selecting a web hosting service, there are several key factors to consider. Firstly, you should assess the amount of disk space available for your website, the software stack and tools provided by the host, the quality of technical support offered, and the cost-to-quality ratio of the service.

Disk space is currently a low-cost resource. However, media content such as images and video files takes up most of the space. For basic websites, 1 GB of space is enough. There are three types of disk drive: HDD, SSD, and NVMe SSD. HDD is the slowest but cheapest, while SSD drives are faster and more expensive. NVMe SSD is the most productive but also the priciest.

CPU frequency and core allocation vary by hosting plan. A faster CPU translates to better performance, and dedicated cores are preferable to shared ones as they prevent usage conflicts between users.

The location of the server is crucial. Choose one closest to your target audience to minimize loading time.

Finally, assess the software stack and tools provided by the hosting provider. Standard virtual hosting usually supports popular technologies like PHP, MySQL, PostgreSQL, and phpMyAdmin, which is sufficient for hosting widely-used CMS platforms like WordPress, Joomla, Drupal and 1C-Bitrix. Nonetheless, if your site has specific requirements, check the technical specifications before selecting a hosting service.