Approximate cost of a project on amazon web services?

Question

Amazon Web Services

Hello, we have a project in the data center, the architecture is approximately the following:
Application on php + memcached + postgresql The
request from the user comes to the balancers from them, the requests go via RR to the web servers with php where requests are processed and a response is given to the user, an approximate daily load is about 1 million requests. By quantitative characteristics, these are several iron servers as balancers, then 5 servers with php and a web server (xeon E5, 8GB RAM, 1Gbps public NIC) and 1 master server with a database (2x AMD Opteron, 64GB, 4x300 SAS). In the future, I want to run this project in the cloud, and for this I need to write a business plan, but I can’t sort out the prices, I found the question toster.ru/q/151203,but still did not understand anything, I tried to calculate through a calculator, but it seemed to me very mediocre. Therefore, dear ones, please help me calculate the approximate monthly cost of working in the cloud. If you need any more introductory information, I'm ready to share.
Thank you.

Answer 1

Well, let's say if we take a couple of simple instances for PHP with a load balancer and a powerful one for
the database awesomescreenshot.com/0ae44092d0
1521 dollars.

Answer 2

If you don’t need Amazon features (S3, Route and others), then it will be much cheaper to get into OVH or hetzner on pieces of iron and do everything with your paws.
Both of them have floating IP, so making a balancer is not a problem.
In hetzner for 3k USD you can get, for example, 40 servers with 2x240 SSD and 32 memory. You can salt.
www.soyoustart.com/ie/essential-servers - too lazy to count here. But the order is the same.
You need a cloud when your load is "floating" - today you have 2 virtual machines for $20 per month, and the day after tomorrow you need to run servers for a couple of tens of thousands of requests per second. And turn it off the next day.
Well, and amazon itself is not only virtual machines, there are a lot of goodies. But judging by the question, you don't really need them.

Answer 3

Why are you in the cloud? It will be more expensive.

Answer 4

Nc_Soft , thanks for the reply.
The fact is that now, if you look at the average daily load on the CPU, I / O disks and the use of channels, then the picture is approximately the following machine with php: CPU by avg ~ 1-3%, memory usage ~ 2GB used, DBMS disk system: iostat util ~ 20-30%, iostat read + write ~ 150-250 requests, the application code is polished and works very stable and balanced, and now we do not use our computing power to the fullest, but pay a fixed fee for renting all servers, according to - this gave me the impression that if we run a project in the cloud, then we will pay only for the actual use of computing power.
PS In principle, if the monthly amount is 2500-3000 USD, then this is within the acceptable range, I just need advice from people who have dealt with Amazon.