A company runs multiple gaming platforms that need to store game state, player data, session history, and leaderboards. The company is looking to move to AWS Cloud to scale reliably to millions of concurrent users and requests while ensuring consistently low latency measured in single-digit milliseconds. The data engineering team at the company is evaluating multiple in-memory data stores with the ability to power its on-demand, live leaderboard. The company's leaderboard requires high availability, low latency, and real-time processing to deliver customizable user data for the community of its users. Which of the following solutions can be used to address the given requirements? (Select two)