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Explain limitations of Ajax.

Limitations of AJAX:

1)Browser Integration
The dynamically created page does not register itself with the browser history engine, so triggering the "Back" function of the users' browser might not bring the desired result.

2)Response-time Concerns
Network latency - or the interval between user request and server response - needs to be considered carefully during Ajax development.

3)Search Engine Optimization (SEO)
Websites that use Ajax to load data which should be indexed by search engines must be careful to provide equivalent Sitemaps data at a public, linked URL that the search engine can read, as search engines do not generally execute the JavaScript code required for Ajax functionality 4)Reliance on JavaScript Ajax relies on JavaScript, which is often implemented differently by different browsers or versions of a particular browser. Because of this, sites that use JavaScript may need to be tested in multiple browsers to check for compatibility issues.