How much does it cost to bring in a visitor? Some web traffic is free, but many online stores rely on paid traffic — such as PPC or affiliates — to support and grow their business. Cost of Acquiring Customers (CAC) and Cost Per Acquisition (CPA) are arguably the two most important ecommerce metrics. When balanced with AOV (average order value) and CLV (customer lifetime value), a business can assess and adjust its ad spend as necessary.
Web analytics is the measurement of the behavior of visitors to a website. In a commercial context, it especially refers to the measurement of which aspects of the website work towards the business objectives of Internet marketing initiatives; for example, which landing pages encourage people to make a purchase. Notable vendors of web analytics software and services include Google Analytics, IBM Digital Analytics (formerly Coremetrics) and Adobe Omniture.