Whatever the goal, a website can be as understated as this one, or as complex as you wish. However, 'keeping it simple' can be a more effective way of presenting content.
Often, a website doesn't have long to make an impression on a visitor, so it makes sense to present content succinctly and clearly.
The intended audience is an important consideration. Is it intended for a particular target audience?
Content is key — the right information, properly presented, will always 'do the job'.
A website is also an advertisement, and therefore reflects on the business or organisation - an important consideration in the design process.
A website needs a Domain Name (also known as URL or web address), which should ideally reflect the name of the business or organisation.
A website needs to be hosted. Consider this as being the space on the Web where the site is stored. Space is normally rented from a 'hosting company'.
A website needs to be designed & built. It can then be hosted with a Domain Name and is visible to anyone who has access to it on the World Wide Web.