Big BangA big bang rollout is a large scale change to an organization that occurs as a one time "cut over." This tends to be high risk but is common nonetheless.
LocationAn incremental rollout by location. For example, a service might be released in a single city as a pilot. This identifies problems before a larger release. distribution channel first. For example, an insurance company sells a new product on its website before rolling out to sales partners.
Existing CustomersOffering a new product to existing customers such as lead users first.
EmployeesLaunching the product to employees first. For example, a retail location may open for one day with special pricing for staff and their families as a dry run for a grand opening.
EventsReleasing a product or service at an event such as a conference or concert. This can be used to generate publicity and to measure reaction. For example, it is common for fashion designs to be released at a fashion week.
InvitationAn invitation-only rollout can minimize the scale of a rollout and also generate demand as customers may be curious what they are missing. Works best if your products have many fans.
The release of a new product, service or feature.