AWS is a leading cloud service provider. But before understanding AWS lets first understand what is cloud. So cloud is just computers situated at some other location which we can access remotely according to our needs and we pay rent to those cloud service providers, few top cloud service providers are AWS(Amazon web services), GCP(Google cloud platforms) and Mircosoft Azure and many more.
Now first thought strikes into our mind is why to rent these computers, why big tech companies rent those computers? why don't they just buy computer on their own so that they don't have to spend any money in renting it, well its not that straight forward. These companies don't always know how much machines do they require or may be don't want to manage those machines on thier own or may be they want to keep their machines secure may be at hardware level and at software level.
So here comes into picture AWS with a tons of services, security, reliability. AWS provides on-demand machines means you pay only for what you use no requirement of preplanning just ask AWS for more machines when you need it and with in seconds you will be having those. These are so much reliable that even big companies like netflix, airbnb, dropbox, ESPN, twitch etc.
AWS have services like EC2 for cloud computing, S3 for object storage, Auto Scalling, AWS Lambda provides serverless means you don't have worry anything about servers, IAM for managing permissions with built in policies. Since AWS is building services for a huge number of companies so obviously it will far better than building infrastrucure on own by a small or mid size company.
Thank You,
Keshavcodex
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