Hi !
Thank you for detailing it out. Allow me to answer your questions inline for context.
Q. User enter in website and exit pages what action done.
A. This is not tracked out of the box. You have to define a series of event you want to track, which will allow you to measure how many people view which pages on your website.
Eg. Event : Page Viewed { Page Name : Sign up Page}
Q. No of Goal Conversation made by user etc...
A. You can set the "Conversion Event" on the right-top section of the screen to see number of times a user has performed an event on their User Profile.
Q. What is SDK and how to implement for integrate with website.
A. SDK is for Apps, Javascripts is for Websites.
Q. how to do the Cloud integration
A. Can you explain your question a little bit? What do you mean by "Cloud" integration?
Q. As well as we can see the visitors difference between clevertap to google analytics, we are getting every day 800 to 900 visitor per day in google analytic and in clevertap 329 to 400 Events only per day. Why that huge difference?
A. The correct way to find out total number of users visiting your website on a given day is by going to Find People and querying the following.
Techno > Device > Desktop
Techno > Browser > Everything but Mobile App (WAP traffic)
The reason GA reports 900 and CleverTap reports 300 is that because GA reports users in the last 5 mins vs. CleverTap reporting users in the last 15 mins.

Cheers,
- Support