why health-check service is required for Load Balancer?

Let us understand, why health-check service API is required for any LB (Load Balancer)? Checking of health, whether underlying node/application/webServer is up and running or not. Health-Check is most important and  basic things, when you add your application server or web server under LB( Load Balancer) (LB can be either SLB- Software Load Balancer or HLB – Hardware Load Balancer).

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PCI DSS (Payment Card Industry – Data Security Standard) overview

PCI-DSS : Payment Card Industry Data Security Standard The full form of PCI-DSS is ‘Payment Card Industry Data Security Standard‘. PCI which is widely accepted set of policies and procedures intended to optimise the security of Card ( i.e. credit, debit, cash card) transactions and protect cardholders data against misuse of their personal information. PCI-DSS is governed by PCI council and PCI DSS was created in 2004 jointly by four major credit-card companies: Visa, MasterCard, Discover and American Express.
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