• It overcomes some speed bottlenecks that traditional Web development has fallen prey too. In most instances an ajax based site will load quicker than a comparable traditional Web site.
• When done well, it significantly reduces initial load times.

Before proceeding, it should be noted that ajax isn't a panacea. It has some problems that it needs to overcome as it continues to mature. But it is a promising field to be involved within and as the years roll on, it probably will greatly affect the way we think about building Web pages and Web applications.

It also needs to be clear that ajax isn't a technology as such but rather is a technique that combines well with other technologies and techniques. For example, xml, dhtml, css, xhtml.