# SSL certificates for product applications
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What SSL certificates will your servers need so your applications (LoB and product) can reach everything they need to run and be accessible?
+ Auto Scaling Group?
+ Database (Amazon RDS)?
+ Load Balancer?
+ Deployment tool server?
+ Web application firewall (AWS WAF)?
+ Other instances?

As an example, for each of the instances listed above you might need the following certificates:

WAF (cert 1) - > ELB-Ext (cert 2) - > ARP (cert 3) - > ELB-Int (cert 4) -> Website (cert 5) - > ELB-Int (cert 6) -> Web service (cert 7).