Today's web applications are complex and to make sure that applications are running at their optimum levels, application performance testing is the solution. Testing of web applications and e-commerce systems is usually done remotely with multiple concurrent connections. Testing includes web monitoring for verification of internet links and finding broken links and load testing, All systems that work on the web have their specific requirements to GUI. This means to say that the web sites should operate at the level of system-user interaction. The knowledge and expertise for popular bottle necks and other fore thoughts will help better plan the process and help provide good estimates which are more realistic.

Navigation on the website needs to be checked and optimized, Navigation is how a user surfs the web pages and how he surfs each page and what buttons he uses on the web page. Also to check each instruction is clear enough and easily understood. There is also the content check that goes in. Content should be logical and must be easily understood. The usage of Fonts, frames and colors should be up to the commonly accepted standards and usage of dark colors should be avoided. There are some standards set and must be followed during web development.

Then follows user interface testing, where the main interfaces are web server, application server interface and the database server interface. The task is to check all the interactions are live and are executed properly. In case there is any error on any side, the will be an error thrown to the user immediately based on the type of error. For eg: If the database server throws any error for a query by the application server, the application server should display these error messages appropriately to the users. Web application monitoring plays an important role in monitoring web applications and its usability.