Backend .NET Core on Linux - Works really well, C# is a great language and quite performant too. EKS/ECS on AWS with spot instances - works out pretty cheap

Backend .NET Core on Linux - Works really well, C# is a great language and quite performant too. EKS/ECS on AWS with spot instances - works out pretty cheap Cloud DBs like Aurora or DynamoDB React for frontend, because of how many libraries are easy to get for it.