The contract also includes a provision for Kambi to supply the Moldovan National Lottery with online and retail sportsbook, with the operator expected to enter Moldova in the summer.
National Lottery JSC won the right to provide sports betting in Moldova, where the vertical is otherwise prohibited, as a result of legislation that regulated it under a monopoly framework in 2016.
National Lottery JSC can now operate as a sportsbook in Moldova for 15 years.
Kambi will provide the operator with its multi-channel sportsbook and plans to go live in the next few months will be followed by a retail rollout.
Kristian Nylén, Kambi CEO, said: "For the 7777.bg brand to be among the market leaders in Bulgaria within 18 months of partnership is testament to the quality of the Kambi sportsbook, as well as the National Lottery’s marketing expertise.
"I’m delighted we’ve agreed to take the partnership to Moldova, where I’m confident players will enjoy our exciting sports betting experiences in both the online and retail environments."
Milen Ganev, Managing Partner of National Lottery JSC, commented: "When replacing our previous sports betting supplier with Kambi, we did so with the goal of becoming a market leader in Bulgaria, a position we’ve achieved well ahead of time."