Windows 7 – no more…

Microsoft ended mainstream support for Windows 7 in January 2015
In 2002 Microsoft introduced its Support Lifecycle policy, and as per this policy, Microsoft Business and Developer products receive a minimum of 10 years of support, and this means that Windows 7 went out of support this year. But what kind of support? Well, Mainstream support, which means that there will be no more automatic fixes, feature updates, or online technical assistance. However, security updates and bug fixes will continue for Windows 7, under the Extended support policy until 2020.
Why is this important?

Running Windows 7 (and its matching server family, Windows Server 2008) after the Extended support date may expose your company to potential security risks, as any vulnerabilities found in windows core code will be updated for current operating systems. You may also face compliance risks resulting from an officially recognised control failure by an internal or external audit body, leading to suspension of certifications, and/or public notification of the organisation’s inability to maintain its systems and customer information.
If your organisation has not started, you are not yet too late, but based on historical customer deployment data, the average enterprise deployment can take 18 to 32 months from business case through full deployment. To ensure you remain on supported versions of Windows, you should begin your planning and application testing immediately to ensure you deploy before end of support.