Install SSL security
Install an Extended Validation SSL certificate. It turns address bars green, assuring site visitors that: They're doing business with a legitimate company. Their transaction information is secure.
Shoppers are more likely to enter credit card and/or other confidential information into a website with the SSL certificate
Build buzz with social media
Don't forget to build holiday promotions into your social media efforts. Fans are likely to pass on promotions and discount offers to their family and friends, bringing more first-time visitors to your website.
Get your website in top shape
Infrastructure: Do a round of load testing to ensure servers can handle increases in traffic and transactions.
Website: Fix broken images or hyperlinks, and ensure purchase paths are clear and "Buy" buttons prominent.
Mobile: Shoppers are using their phones to shop, so consider your mobile strategy carefully.
Line up your marketing
SEO: Update keywords for better search engine optimization, and estimate a budget for paid search.
PPC: Consider retargeting to your brand in front of visitors after they leave your website.