Bounce Rate

Cost per lead is a model wherein companies pay a third-party service to provide leads for their business. This may be on an ad hoc basis or in a subscription model, with varying rates for different volumes and types of leads.

Agile Development - sometimes simply called Agile - is a project management style that emphasizes quick, iterative changes to a project to maintain flexibility in the project’s parameters and deliverables.

This is often juxtaposed with Waterfall Development, wherein an entire project is completed in stages before any launch happens. Testing and iterating in Agile often happens during development, with the initial launch happening much earlier in the process to get quicker feedback.

Marketing Qualified Leads (MQL) are those prospective customers that, through some action related to marketing efforts, are more likely than others to become a customer. 

This can be tracked a number of ways, and is often related to users who take a specific action on a website that isn’t a full purchase, but indicates a strong interest in purchasing.