What are the visa & residency requirements in India?

"The process of applying for a visa in India depends on the type of visa you are applying for. Generally, you must complete an online application form and submit copies of required documents, such as a passport, valid passport-sized photos, bank statements, and an authorized travel itinerary. You may also need to provide medical or employment documents, or proof of a valid Indian visa, depending on the type of visa you are applying for. If you are applying for residency in India, you must first obtain a valid visa, such as business or employment visa, or a spouse visa if married to an Indian national. Once you have the necessary visa, you are required to apply for a Resident Permit before you can reside in India for more than six months. To do so, you must submit an application form and copies of your passport, visa, address proof, bank statements and marriage certificate (if applicable) to the Foreigners Division of the Regional Passport Office. The Indian government then issues the Resident Permit," mentioned another expat when asked about moving to India.