diff --git a/README.md b/README.md
index f7dc1b4..6e25cc8 100644
--- a/README.md
+++ b/README.md
@@ -53,3 +53,134 @@ private subnet : cannot receive traffic from outerworld but may or may not send
 ![Screenshot from 2023-11-26 13-47-33](https://github.com/KRIISHSHARMA/AWS/assets/86760658/a7b8c06a-c163-4b80-a052-d433928260ff)
 ![Screenshot from 2023-11-26 13-57-52](https://github.com/KRIISHSHARMA/AWS/assets/86760658/86722cee-9cc8-47be-9e62-a4f6fb8dc842)
 ![Screenshot from 2023-11-26 13-59-20](https://github.com/KRIISHSHARMA/AWS/assets/86760658/2edee858-bceb-49da-8c19-d87403bf0582)
+
+## Application based LB 
+- key pair : kind of like a password (public key is username; private key is password)
+  - PPK (PuTTY Private Key) and PEM (Privacy Enhanced Mail) are two file formats that are commonly used for SSH and SSL/TLS connections. While PPK files are primarily used with PuTTY on Windows, PEM files are more widely supported and can be used with various tools and platforms
+
+- security groups : A security group controls the traffic that is allowed to reach and leave the resources that it is associated with. For example, after you associate a security group with an EC2 instance, it controls the inbound and outbound traffic for the instance. When you create a VPC, it comes with a default security group. (acts as a firewall)
+
+![Screenshot from 2023-11-26 15-39-41](https://github.com/KRIISHSHARMA/AWS/assets/86760658/90eeb7f4-8428-4876-8a3e-288feb952aa1)
+![Screenshot from 2023-11-26 15-39-41](https://github.com/KRIISHSHARMA/AWS/assets/86760658/73bc04f3-081a-4451-adf4-f89c488b8a67)
+![Screenshot from 2023-11-26 15-40-34](https://github.com/KRIISHSHARMA/AWS/assets/86760658/e96e05df-b33c-400a-8264-946d9a878644)
+![Screenshot from 2023-11-26 15-40-51](https://github.com/KRIISHSHARMA/AWS/assets/86760658/bb9edf0e-42cb-49b8-abe9-34f0c2d35e87)
+
+### Creating a target group 
+- Your load balancer routes requests to the targets in a target group and performs health checks on the targets.
+- LB routes traffic to target group then traffic group routes traffic to the back end ec2 instances or IP addresses etc
+
+![Screenshot from 2023-11-26 15-49-16](https://github.com/KRIISHSHARMA/AWS/assets/86760658/eff46d2f-b504-44e9-9269-7a2b877930d6)
+![Screenshot from 2023-11-26 15-49-16](https://github.com/KRIISHSHARMA/AWS/assets/86760658/5500b66f-9467-4353-9599-5186bcbb156a)
+![Screenshot from 2023-11-26 15-50-48](https://github.com/KRIISHSHARMA/AWS/assets/86760658/848472d8-4fda-4580-9563-d10d1e17202c)
+
+![Screenshot from 2023-11-26 16-19-25](https://github.com/KRIISHSHARMA/AWS/assets/86760658/bb5bbe47-681f-4383-8825-a3974aef26a4)
+![Screenshot from 2023-11-26 16-24-54](https://github.com/KRIISHSHARMA/AWS/assets/86760658/f9a7faaf-0855-4cc3-afa5-fc65e9793b22)
+
+## Autoscalling 
+![Screenshot from 2023-11-26 16-44-57](https://github.com/KRIISHSHARMA/AWS/assets/86760658/7dc2321e-8595-4bd4-8c6e-b3696e5a6999)
+
+### Creating launch template
+![Screenshot from 2023-11-26 16-59-20](https://github.com/KRIISHSHARMA/AWS/assets/86760658/1ee051f9-5524-4a61-985b-4cbe32bee5ee)
+![Screenshot from 2023-11-26 17-01-18](https://github.com/KRIISHSHARMA/AWS/assets/86760658/ce935d36-35b6-4fbf-8662-d4e0ccb17fcc)
+![Screenshot from 2023-11-26 17-17-33](https://github.com/KRIISHSHARMA/AWS/assets/86760658/8aee6470-e044-437e-a5f8-8811d748f1f0)
+![Screenshot from 2023-11-26 17-19-34](https://github.com/KRIISHSHARMA/AWS/assets/86760658/884c3f5a-4104-46f1-b197-164ce1cf29e4)
+
+
+![Screenshot from 2023-11-26 17-05-17](https://github.com/KRIISHSHARMA/AWS/assets/86760658/b3b85552-b55e-4e5d-bb8e-b221add8bc17)
+![Screenshot from 2023-11-26 17-08-50](https://github.com/KRIISHSHARMA/AWS/assets/86760658/b7f17b5a-3a38-4cf3-a754-fca7fc871c01)
+![Screenshot from 2023-11-26 17-11-22](https://github.com/KRIISHSHARMA/AWS/assets/86760658/8fe1d28f-e615-48f4-8e19-c1e6932263e2)
+![Uploading Screenshot from 2023-11-26 17-22-51.png…]()
+
+
+### Creating scalling policies 
+![Screenshot from 2023-11-26 17-34-29](https://github.com/KRIISHSHARMA/AWS/assets/86760658/1e2b5ae4-2379-4a52-a3d8-687e9e1bf3cd)
+![Screenshot from 2023-11-26 17-35-23](https://github.com/KRIISHSHARMA/AWS/assets/86760658/8cead298-7c0e-4f1d-878e-ef6792825f03)
+
+## Artificial load 
+``` bash
+htop
+```
+![Screenshot from 2023-11-26 17-39-48](https://github.com/KRIISHSHARMA/AWS/assets/86760658/c6aa182a-0282-45f5-b610-c3aad12e57cd)
+
+- currently 0
+
+- making instance count to a high number
+``` bash
+seq 999999999999999999999 > /dev/null &
+```
+![Screenshot from 2023-11-26 17-43-25](https://github.com/KRIISHSHARMA/AWS/assets/86760658/93d6f92d-ba24-4e4a-8f2e-5901802d18f0)
+
+![Screenshot from 2023-11-26 17-58-10](https://github.com/KRIISHSHARMA/AWS/assets/86760658/88495da3-fbbe-4e66-bfc3-94c81d92787c)
+![Screenshot from 2023-11-26 17-58-29](https://github.com/KRIISHSHARMA/AWS/assets/86760658/00cd991a-994e-4890-9176-adb65dbf3ccd)
+![Screenshot from 2023-11-26 18-11-32](https://github.com/KRIISHSHARMA/AWS/assets/86760658/7ce90daa-db12-4b4c-b655-ba62d155f060)
+
+- going to the DNS name and reloading will take you to diff targets(3)
+- this is **round robin** at work  
+
+## AWS CLI : The AWS Command Line Interface (AWS CLI) is a unified tool to manage your AWS services. With just one tool to download and configure, you can control multiple AWS services from the command line and automate them through scripts.
+- BOTO library in python
+
+![Screenshot from 2023-11-27 16-45-38](https://github.com/KRIISHSHARMA/AWS/assets/86760658/fae33c2d-6122-4ee2-aa75-5f061bcbba20)
+![Screenshot from 2023-11-27 16-47-42](https://github.com/KRIISHSHARMA/AWS/assets/86760658/768d5a91-8c74-42ed-b08e-14c3ad5c11eb)
+
+``` bash
+sudo snap install aws-cli
+```
+``` bash
+aws configure
+```
+![Screenshot from 2023-11-27 17-08-27](https://github.com/KRIISHSHARMA/AWS/assets/86760658/71a8036d-299a-4b48-adbb-8049b3f16dea)
+
+- in security credentials , before creating access key copy and paste PU , PrK and fill location and format in terminal 
+- give user access
+
+![Screenshot from 2023-11-27 17-30-18](https://github.com/KRIISHSHARMA/AWS/assets/86760658/50c16ed9-0a30-49a2-b9aa-d834c2622e99)
+
+![Screenshot from 2023-11-27 17-31-17](https://github.com/KRIISHSHARMA/AWS/assets/86760658/a7ce2566-0cbb-4b6e-8412-106c939a0f81)
+![Screenshot from 2023-11-27 17-31-32](https://github.com/KRIISHSHARMA/AWS/assets/86760658/cb651886-272d-4b28-94de-25785de9fcab)
+
+- after creating instance
+``` bash
+aws ec2 describe-instances
+``` 
+
+![Screenshot from 2023-11-27 17-35-01](https://github.com/KRIISHSHARMA/AWS/assets/86760658/e4ba62f0-42f5-4e8d-840f-41d32e1cf6a3)
+![Screenshot from 2023-11-27 17-35-01](https://github.com/KRIISHSHARMA/AWS/assets/86760658/de7fef08-39e8-4525-a276-6da3f8c2e742)
+![Screenshot from 2023-11-27 17-46-10](https://github.com/KRIISHSHARMA/AWS/assets/86760658/15f77e24-064b-4aca-9de0-562c6a54c890)
+![Screenshot from 2023-11-27 18-12-04](https://github.com/KRIISHSHARMA/AWS/assets/86760658/1cf4f02a-59c8-43d9-896f-28d980add612)
+![Screenshot from 2023-11-27 18-12-32](https://github.com/KRIISHSHARMA/AWS/assets/86760658/6e9a8d71-0ede-42fd-9c93-3a53a2e109a0)
+![Screenshot from 2023-11-27 18-14-02](https://github.com/KRIISHSHARMA/AWS/assets/86760658/899d441d-7208-4778-8537-6be1a92008d0)
+![Screenshot from 2023-11-27 18-17-35](https://github.com/KRIISHSHARMA/AWS/assets/86760658/89a6f2f4-a014-4ec6-91fe-4994d0e26d40)
+![Screenshot from 2023-11-27 18-26-06](https://github.com/KRIISHSHARMA/AWS/assets/86760658/4789776e-d9e7-4a27-8c3d-038298c02daf)
+
+
+- docker image to create art load
+- pods : Pods are the smallest deployable units of computing that you can create and manage in Kubernetes. A Pod (as in a pod of whales or pea pod) is a group of one or more containers, with shared storage and network resources, and a specification for how to run the containers.
+
+ ![download](https://github.com/KRIISHSHARMA/AWS/assets/86760658/1bf8d1eb-e0b6-4674-bd98-fbcf383135d3)
+
+- daemon sets : works on nodes where pods are running , can manage all your agents eg if we are runninf 5 ec2 instances behind the k8s cluster then we can run 1 daemon set and that daemon set wil take care of all the agents 
+
+## CLOUD 9
+- cloud based IDE (vscode , pycharm etc)
+- provides IDE on browsers
+
+![Screenshot from 2023-12-02 16-01-33](https://github.com/KRIISHSHARMA/AWS/assets/86760658/9208cded-f435-451a-a192-c4a254244e75)
+![Screenshot from 2023-12-02 16-12-26](https://github.com/KRIISHSHARMA/AWS/assets/86760658/9efd1bc2-5393-4ac1-9a28-0355a7961482)
+![Screenshot from 2023-12-02 16-12-51](https://github.com/KRIISHSHARMA/AWS/assets/86760658/b7a5eecb-5d92-46af-a9ad-7ba6db2a5391)
+
+
+- after confiugring aws cli on cloud 9 (scroll up) 
+-  configure EKS ctl and kubectl [link for installation](https://docs.aws.amazon.com/emr/latest/EMR-on-EKS-DevelopmentGuide/setting-up-eksctl.html)
+  
+![Screenshot from 2023-12-02 16-35-44](https://github.com/KRIISHSHARMA/AWS/assets/86760658/e128f431-c888-4cc3-b8fa-2f7a0a3835a1)
+![Screenshot from 2023-12-02 16-55-57](https://github.com/KRIISHSHARMA/AWS/assets/86760658/79d1bb3c-b8b3-49af-bd3f-b7552ab700da)
+![Screenshot from 2023-12-02 16-56-13](https://github.com/KRIISHSHARMA/AWS/assets/86760658/9e89cf9d-7dbc-419e-8f0b-f35c8b830198)
+![Screenshot from 2023-12-02 16-57-22](https://github.com/KRIISHSHARMA/AWS/assets/86760658/7bd6650b-e499-414d-baef-5f7a5bdc8799)
+
+- launching a cluster
+  ```bash
+  eksctl create cluster --name test --version 1.28 --nodegroup-name ng.default --node-type t3.micro --nodes 2 --managed
+  ```
+  ![Screenshot from 2023-12-02 17-05-19](https://github.com/KRIISHSHARMA/AWS/assets/86760658/460b3b95-798a-439f-9611-95c419fa1064)
+