What are the visa & residency requirements in Kenya?

"In order to visit Kenya, foreign nationals must obtain a visa prior to arrival. The process of applying for a visa involves submitting an application form, a valid passport, two passport-sized photographs, and the applicable visa fee. Depending on the purpose of the visit, additional documents may be required. In order to obtain residency in Kenya, foreign nationals must submit an application form, a valid passport, two passport-sized photographs, and the applicable fee. They must also provide proof of employment, proof of sufficient funds, and a valid residence permit. Depending on the purpose of the residency, additional documents may be required," remarked another expat in Kenya.