100 
      
      
        
          Default in performance and its consequences 
        
      
      
        Default in performance is understood to be obstacles to the performance of 
      
      
        the contract such as impossibility (not initially), delay, the occurrence of 
      
      
        defects or a positive breach of contract.  
      
      
        
      
      
        Impossibility: If fulfilment by the provider becomes finally 
      
      
        impossible, he can be held liable if this impossibility is attributable to 
      
      
        the provider. 
      
      
        
      
      
        Delay: The most important case of delay in practical terms is that of 
      
      
        non‐performance despite the due date. If the delay is by default, it 
      
      
        will usually also lead to an entitlement to compensation. In any case 
      
      
        the user can insist on performance of the contract or can withdraw 
      
      
        from the contract after giving a reasonable period of notice.  
      
      
        
      
      
        Defectiveness: In practical terms, this mainly relates to the speed, 
      
      
        the permanent availability and the quality of the services rendered 
      
      
        by the provider. The provider is responsible for defects which the 
      
      
        expected service exhibits at the point in time of performance, 
      
      
        provided a claim is filed relating to these defects within the warranty 
      
      
        period. Under warranty law, it is usually unimportant whether the 
      
      
        defect is attributable. However, fault does play a central role in the 
      
      
        field of compensation for damages.  
      
      
        
      
      
        Positive breach of contract: If a party to the contract violates the 
      
      
        protection duties assigned to it and damages the other party's goods, 
      
      
        this is a violation of the contract known as a positive breach of 
      
      
        contract. This can lead to consequential or collateral damage. Fault 
      
      
        needs to be involved and the infringer is liable for both its agents and 
      
      
        its own acts. What is important for assigning blame is that the law 
      
      
        envisages a reversal of the burden of proof.  
      
      
        
          Right of intervention in case of sub‐contractors   
        
      
      
        As already stated, various legal issues can occur in the fulfilment of a 
      
      
        contract. This might be even more problematic if the Cloud service provider 
      
      
        uses a subcontractor or multiple subcontractors.  
      
      
        Because there will typically be a contract between the Cloud service user 
      
      
        and the provider (lawyers refer to this as a contractual obligation), the 
      
      
        subcontractor acts as an agent of the provider. The provider is however not 
      
      
        always liable for acts by its agents just like it is for its own acts. It is therefore 
      
      
        important to have a direct (e.g. executive) recourse to the subcontractor.