Payments startup Adyen has raised $250 million in financing at a reported valuation of $1.5 billion. Proceeds from the round, which was led by General Atlantic, will be used for international expansion; the funding comes roughly six months after a $16 million round. Adyen's payment solution for mobile, online and in-store transactions enables merchants to accept any type of payment anywhere in the world through hosted payment pages. Clients can also take payments through their own webpages by using the company's direct API integration and an easy encryption solution. In 2013, Adyen processed $14 billion through its platform, a year-over-year growth of 40%.