AWS by harsha VPC and EC2
Class 1:(Introduction to aws) Iaas vs Paas vs Saas: Iaas: * Entire infrastructure should be managed by us.It provides Ec2 instances, we need o install app servers on top of EC2 instances and database and web servers as well * we will have more control * If we face down time or any issues we need to contact aws support.Since infrastructure is managed by aws Pass: * Vendors will provide the sevices. we don't have complete control on that applications * One good example was Dynamo Databases, we just need to use them and we didn't install them on any bare machine * If there is an issue, we need to contact specific vendor, Eg: Postgres DB,oracle db etc Saas: * Every thing is taken care by applications owners * We just need to connect and use it ..Thats it * We don't have any control on backgroud activity Eg: Office 365,Sales force,Google workspace Class 2:(Datacenter architecture) Regions vs availability zones vs data centers Link: We have 3 data centers.. Grou...