This is a guest blog post from CPG and Amazon expert, Melissa Burdick. Melissa has over 12 years of experience in ecommerce, and works with brands to help them develop ecommerce strategies and win online. She previously helped launch the CPG retail business on Amazon.com, and was at Amazon Media Group at its inception.     For a long time, CPG brands didn't need to be overly concerned with ecommerce. US CPG manufacturers sleepily watched other categories (like consumer electronics) and markets (like UK and China) increase in ecommerce maturity while still focusing on their bread & butter brick & mortar businesses.  However, as shifting consumer preferences, low barriers to entry online giving rise to niche incumbent brands, and declining brick & mortar sales, an ecommerce strategy has suddenly gone from nice to have to critical and required immediately.  According to a new Nielsen study, brick and mortar sales for fast-moving CPGs have declined, while online sales of these same goods have grown by a massive 32% over the last year. The study stated that nearly nine of out of 10 dollars of FMCG retail growth came from online last year.