Obtaining Archive of the Target Website

Getting access to the archive of the target website will let you know how the website was during the time of its launch and how it got advanced and changed over time. You will also see all the updates made to the website, including the nature of updates and their dates. You can use the WayBackMachine tool to access the this information.
WayBackMachine: http://archive.org/web/
  Just use the above link to visit the WayBackMachine website and type in the URL of the
target website. You should get a list of archives of the website listed in a month by month and yearly basis as shown in the snapshot below

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