Strings on AdS3 × S3 × S3 × S1 and their CFT duals
My talk will consist of two parts: I will first explain the CFT dual of tensionless string theory on AdS3 × S3 × S3 × S1 with pure NS-NS flux. I will then describe a proposal for the weakly coupled CFT dual of the D1-D5-D5′ system.