Your setup seems quite good for sure as well! It'll definitely be cheaper than going with EB - once you include the load balancer as well, which you probably need if you don't want a single instance managing all your traffic. However you gain ddos protection and fully automatic scaling for 12 bucks a month.
The biggest benefit for me is that you are not tied to a single EC2 instance anymore. theoretically this is a moot pain point - in my work we have EC2 instances with uptimes going to four years now. I assume AWS aims for even better stability with lightsail (or not? Can't remember what the SLA for lightsail is). But EB or appengine is definitely the bare minimum of what you need to truly consider yourself cloud native and given the small increase in investment it might be worth it.
How does your traffic scale? Does it peak during work hours? You could potentially setup EB with a small instance that scales up to 2-3 instances just during work hours, with just a few toggles. Also, if you at least estimate having this service for a year, you can prepay and reserve the instance which is again a huge discount.
More importantly, I think the productivity gains you see going into continuous deployment is amazing. Getting a deploy by just merging your PR to master is surreal for sure, and makes it a breeze to just work on your features instead of infra! Often if I'm lazy and want to refresh some environment state I'll jusr kill the EC2 instance with the confidence that EB will scale a new one up!
The biggest benefit for me is that you are not tied to a single EC2 instance anymore. theoretically this is a moot pain point - in my work we have EC2 instances with uptimes going to four years now. I assume AWS aims for even better stability with lightsail (or not? Can't remember what the SLA for lightsail is). But EB or appengine is definitely the bare minimum of what you need to truly consider yourself cloud native and given the small increase in investment it might be worth it.
How does your traffic scale? Does it peak during work hours? You could potentially setup EB with a small instance that scales up to 2-3 instances just during work hours, with just a few toggles. Also, if you at least estimate having this service for a year, you can prepay and reserve the instance which is again a huge discount.
More importantly, I think the productivity gains you see going into continuous deployment is amazing. Getting a deploy by just merging your PR to master is surreal for sure, and makes it a breeze to just work on your features instead of infra! Often if I'm lazy and want to refresh some environment state I'll jusr kill the EC2 instance with the confidence that EB will scale a new one up!