Google is by far the biggest search engine giant. It has designed a number of tools which can be used by experts or business owners who wish to check on how their site is performing, highlight any issues that need to be rectified and report to Google of any changes they need to be aware of. Google analytics is a great platform to enable you to see what is happening with your site sin terms of visits and interactions. You can view data in real time, historical and also compare to previous periods. It allows you to drive down in to each page to see how it is performing and analyse data to find out what devices people are using to view your site and how they are finding you i.e. social media, referring links or organic search etc. This information is vital to improving your customer experience and search engine visibility.
Another useful tool by Google is Webmaster Tools. This allows you to drill down into what content is being show in the Google search results and what any issues that have been found which may be negatively affecting your site. For example, it can show you which pages are displaying broken links or which pages are set to not be indexed. When this is used in combination with analytics, you really can have a powerful tool to improve your website.