Binance needs to scale to accumulate the continuous increase in their number of users.
Looks like they're working on it right now.
article from Binance:
Binance Spot Trading System Upgrade Notice (2021-04-20)Fellow Binancians,
Binance will perform a scheduled system upgrade starting at 2021-04-20 2:00 AM (UTC). The upgrade will take approximately 2 hours.
Binance Futures & Options trading will continue unaffected during the upgrade period. Binance Leveraged Tokens will suspend trading, subscription, and redemption.
During the upgrade period, Binance will suspend the following services:
Deposits and withdrawals
Spot and margin trading
P2P trading
Convert & OTC Portal trading
New user registrations
Sub-accounts activations
Subscription & redemption of Savings
Swapping or adding/removing liquidity on Binance Liquid Swap
Staking or redeeming assets from Launchpool
Crypto Loans services
Binance Card dashboard and transactions
Binance Pay
Asset transfers from sub-accounts, margin accounts, futures accounts, pool accounts and fiat wallets.
Users will have a 30-minute window after the upgrade is complete to cancel orders, process deposits and withdrawals, transfer funds, and use all other account-related functions before trading resumes.
Major improvements in this upgrade include:
Overall system performance and stability improvements.