Customer never sleeps and therefore customer service can never sleep. Someone somewhere is potentially searching for your product; you just have to ensure your visibility to that client as soon as possible with extremely catchy and concise information so that the client does check your brand out. The most common method being employed by online users in searching for anything is thru search engines (Google, Bing, Biado, Yahoo etc.) and by maintaining high Search Engine Result Page (SERP) rankings you can ensure that your product is the amongst the first few that get visible to a user. Search Engine Optimization (SEO) is the foremost technique that can help your online presence get the ranking it requires.
The other method of directly approaching and interacting with your clients is through social media profiles of Facebook, Instagram, LinkedIn etc. With over 1 billion Facebook users, it is surely one of the easiest and fastest way to showcase your product as well as connect directly with your customers. SEO technique of Social Media Optimization (SMO) can help you achieve a more robust, interactive and client centered social profile.